|
ACOUSTO-OPTICAL
DEVICES |
|
AOD are widely used in laser show business, laser teleorientation, optical
image processing, RF spectrometry, etc.
We fabricate one-coordinate and two-coordinate AOD from UV to middle IR.
The typical features of the two-coordinate AOD operating at visible region
are as follows:
Features:
| Acousto-optical
material |
TeO2 |
| Working
wavelength |
488 - 670 nm |
| Number
of resolving spots (rayleigh criterion) |
750
x 750 |
| Optical
aperture |
up
to 10 x 10 mm2 |
| Deflection angle (at 633
nm) |
2.5
x 2.5 degrees |
| Laser
radiation pulse risetime (at 10% - 90% level) |
16
ms |
ACOUSTO-OPTICAL LASER BEAM DEFLECTOR
Anisotropic sound-light interaction in TeO2 6°
<110> cut crystal is used for beam deflection. Input beam hole and
beam polarization are marked on the housing. Input and diffracted beams
propagate approximately in the same direction.
Product Description
|
Aperture, mm |
7 |
|
Transmission (at 0. 515 µm), % |
95 |
|
Efficiency (driving power 0.8 W), % |
>
80 |
|
VSWR |
<
2.5 |
|
Frequency range (ΔF), MHz |
60 ÷ 110 |
|
Resolution (T ΔF) |
500 |
|
Beam scanning angle, deg |
appr.
2 |
|
Access time (T), µs |
appr.
10 |
Acousto-optical deflectors for 0.63, 0.48, 1.06 µm are available.
| Acousto-optical deflector for 0.48 µm |
Cat.-No.: D-010-01/048 |
| Acousto-optical deflector for 0.63 µm |
Cat.-No.: D-011-01/063 |
| Acousto-optical deflector for 1.06 µm |
Cat.-No.: D-012-01/106 |
|
|
|
Acousto-optical laser beam modulator |
|
|
Anisotropic sound-light interaction in TeO2
6° <110> cut crystal is used for beam intensity modulation.
Product Description
|
Aperture, mm |
4 |
|
Transmission (at 0. 515 µm) , % |
95 |
|
Efficiency (driving power 0.2 W), % |
95 |
| VSWR (70 -
100 MHz) |
<
2 |
| Beam
separation (80 MHz), deg |
appr.
3 |
| Sound velosity, cm/s x
10-5 |
0.65 |
|
Access time (T), µs |
>
0.5 |
| Acousto-optical
modulator |
Cat.-No.:
D-020-01 |
|
|
|
Acousto-optical 10.6 µm radiation frequency shifter
|
|
|
Light - sound interaction medium in the Acousto-optical 10.6 µm shifter is <111> cut Ge crystal. LiNbO3 longitudinal acoustic wave transducer is attached by cold Indium vacuum welding. Dimensions of the transducer are 1.5 mm x 20 mm. Light beam polarization plane is shown by two white points near input-output holes.
Product Description
| Light polarization |
linear |
| Active aperture, mm |
1.5 x 3.0 |
| Light beam divergence, mrad |
up to 1.1 |
| Output beam separation, grad |
12.1 |
| Light beam power, W |
up to 10 |
| VSWR |
<1.5 |
| Driving power limit, W (water cooling is necessary) |
20 |
| Upper temperature limit of frequency shifter package, °C |
35 |
Attention:Water cooling of frequency shifter is necessary.
| Acousto-optical 10.6 µm shifter |
Cat.-No.: D-030-01 |
|
|
|
CO2-Laser power controller
|
|
|
CO2-Laser power controller includes the
following units: Ge based ACOUSTO-OPTIC MODULATOR; RF DRIVER and DC POWER
SUPPLY.
Product Description
| Acousto-optical
modulator |
|
| Center
radio frequency, MHz |
40 |
| Bandwidth,
MHz |
1 |
| VSWR |
<
1.2 |
| Diffracted
beam separation, deg. |
4.41 |
| Aperture,
mm |
8 |
| Efficiency,
% |
>
85 |
| Beam
power up to W |
150 |
| Beam
divergence up to |
30' |
| RF
power, W |
60 |
| Transmission,
% |
>
88 |
| Cooling
water flow rate, L/min |
1.5 |
| Water
temperature below, °C |
30 |
| RF
driver |
|
| Radio
frequency, MHz |
40 |
| Frequency
stability |
10-4 |
| Output
power RF, W |
60 |
| Input
modulation |
TTL
Level |
| Cooling
water flow rate, L/min |
1.5 |
| Water
temperature below, °C |
50 |
| DC
power supply |
|
|
DC output voltage |
+27
VDC |
|
Maximum current |
5
A |
|
Two-wired line supply |
220
VAC 50 Hz |
Attention: The optimum performance will only be achieved
when the beam height is positioned on the centre line of optical element.
| CO2-Laser
power controller |
Cat.-No.:
D-040-01 |
| DC
power supply |
Cat.-No.:
D-042-01 |
|
|
|
Acousto-optical tunable filter |
|
| In recent years the problem of optical
images spectral processing by means of Acousto-optical tunable
filters appears to be one of the mostly discussed ones in the
field. |
|
To increase signal/noise ratio it is necessary to use extra large optical
aperture AO filters. These AOTF can be widely used in Acousto-optical
spectrometers for ecological monitoring, plasma process regulation, medical
diagnostics, etc. AOTF can be used as the achromatic Acousto-optical modulators
for white lasers in laser show-business.
We fabricate some wide aperture and wide angular models of these AO tunable
filters from UV to middle IR.
The typical features of the wide aperture AO filter for optical image
processing at IR region are the following:
Features:
| Acousto-optical
material |
TeO2 |
| Tuning
spectral range |
2000 - 4000 nm |
| Spectral resolving power at 3000 nm |
10 nm |
| Optical linear aperture |
15 mm x 20 mm |
| Optical angular aperture |
8o |
Collinear AOTF, based on the other acousto-optical materials such as CaMoO4,
Si02, LiNb03,
also available.
| Acousto-optical
tunable filters (please specify the parameters) |
Cat.-No.:
D-053-xx |
|
|
|
Narrow-band acousto-optical tunable filter |
|
Tunable Acousto-optical filters are capable of fast selection of a given
signal from other optical signals in a fiber. In modern advanced multiwavelength
optical network information is transmitted in a number of independent
channels. In particular, these channels are usually positioned at wavelengths
in the spectral range from 1530 to 1565 nm. In a typical wavelength division
multiplexed (WDM) system, each optical channel is controlled separately
because it contains independent data, thus providing multiplexing of the
information transmitted along the fiber line.
We fabricate narrow-band quasi-collinear AOTF, which can be used in WDM
telecommunication systems as well as in acousto-optical spectrometers.
The typical features of the AOTF, intended for 1550 nm WDM systems
are the following:
Features:
| Acousto-optical
material |
TeO2 |
| Tuning
spectral range |
1530
- 1565 nm |
| Resolving
power |
1.5 nm |
| Driving
RF power |
200
mW |
| Efficiency |
70% |
Collinear AOTF, based on some other acousto-optical materials such as CaMoO4,
Si02, LiNb03, are also available.
| Narrow-band acousto-optical tunable filter (please specify the parameters) |
Cat.-No.: D-064-xx |
|
|
|
Tunable AO-filter based imaging spectrometer |
|
| Imaging spectrometer based on the tunable
acousto-optical filter is designed for the acquisition of data
combining simultaneously both high spatial resolution and high
spectral resolution. The spectrometer is intended mostly for study
the planets and the emission objects - planetary nebulae and Seyfert
galaxies - to get images at different wavelengths. |
|
The device can be useful for study the variability of emission lines in AGNs (active galactic nuclei), such as Seyfert galaxies and quasars. The spectrometer possesses very large optical input aperture and large optical angular aperture. Special optical geometry of the acousto-optical filter is used in order to keep the direction of the optical axis the same. These constructive features of the device provide easy way for its installation into the telescope because the complicated additional optics is not needed. The spectrometer can be used with any typical f/12 - f/20 Cassegrain telescope and with any typical CCD camera. The computer-controlled two-channel driver system provides the potential capability for the correlation spectral analysis.
Main specification:
| Acousto-optical
material - TeO2 |
Spectral resolution
at -3 dB level (at wavelength 656,3 nm) - 1,3 nm |
| Optical aperture
- 2.5 x 2.5 cm |
Spatial resolution
- less than 1 arc.sec. |
| Optical angular
aperture - 7 degrees |
Maximum spectral
transmission for linear polarized light - 90% |
| *Spectral range
- 630 - 1200 nm |
Number of spectral
points - 16 383 |
* The spectral ranges 400-630 nm, 1100-2300 nm and 2300
- 4800 nm are also available.
Publications:
V.Ya. Molchanov at
al. "An acousto-optical imaging spectrophotometer for astrophysical
observations", Astronomy Letters, vol.28, No.10, 2002, pp. 713-720
| Tunable
AO-filter based imaging spectrometer |
Cat.-No.:
D-075-10 |
|
|
|
Q-SWITCHES |
|
|
Passive q-switching has become widely used technique in solid state lasers development. The application of saturable absorbers simplifies considerably laser design, makes it more compact and cheap. The saturable absorbers became successfully applied in diode pumped microchip lasers.
|
|
|
Cr+4:YAG passive Q-switch
|
|
Cr+4:Y3Al5O12
or Cr+4:YAG - is a material that can be
used as an active media for CW, pulsed or self mode-locked tunable NIR
solid-state lasers with tunability range 1340 - 1580 nm as well as a media
for Q-switching in lasers with operating wavelength at 950 - 1100 nm.
It is particularly useful in practical applications because of convenient
absorption band of Cr+4around 1 mm which
gives possibilities to pump it by regular Nd:YAG lasers. A saturation
of absorption in the band at 1060 nm is useful for application in small
sized Nd:YAG oscillators with flash lamp or laser diode pumping instead
of based on dye or LiF:F-center passive Q-switches. Using the Cr+4:YAG
crystal the self mode-locking (KML) regime is achievable. It gives an
opportunity to build the laser source with pulse duration shorter then
100 fs at 1450 - 1580 nm.
Finally, its high thermal and radiation stability as well as excellent
optical and mechanical properties will give you an opportunity to design
reliable devices based on the crystal.
Technical Specifications:
| Wavelength,
nm |
950 - 1100
nm |
| Initial transmittance,
% |
15 - 90 |
| Initial absorption
coefficient, cm-1 |
0.05 - 3.00 |
| Aperture, mm |
5 - 12 |
| Contrast |
> 8 - 10 |
| Optical length,
mm |
1 - 40 |
| Damage threshold,
J/cm2 |
> 4 |
| Long-term stability |
> 15 years |
|
Cr+4:YAG passive Q-switch |
Cat.-No.: D-085-01 |
|
|
|
GSGG : Cr4+ passive
Q-switch |
|
|
Gadolinium-scandium-gallium garnet doped with chromium and magnesium
GSGG:Mg:Cr4+ is a material for passive
Q-switching in 1 µm region. The valence state of chromium ion
Cr4+ is provided by use of charge
compensator. The crystals are grown by Zchochralski method in argon-oxigen
atmosphere. Crystals of GSSS:Mg:Cr possessing the contrast parameter
close to the one of YAG:Cr4+ have
some advantages such as: possibility to provide necessary initial
transmission at less thickness (typical thickness is about 1mm),
transparency in the visible range which simplifies the alignment
procedure. |
SPECIFICATION:
| Initial transmission |
5 - 95 % |
| Absorption index at the wavelength of 1.067 µm |
0.2-10 cm-1 |
| Contrast |
6 - 7 |
| Thickness |
0.5 - 5 mm |
| Diameter |
6 - 9 mm |
| Relaxation
time of the exited state (4A2
→ 4T1(4F)
absorption) |
200 ns |
Application: for short-pulse
lasers of IR spectral range
Publications:
R.Buzelis, A.Dementiev, E.Kosenko, E.Murauskas, F.Ivanauskas, M.Radziunas "Determination of absorption cross sections of Cr4+:GSGG and Cr4+:YAG passive Q-switches at the generation wavelength of Nd:YAG laser", Lithuanian Journal of Physics, 37(4), pp 291-298, 1997
| GSGG : Cr4+ passive
Q-switch |
Cat.-No.: D-090-01 |
|
|
|
YAG:V3+ passive
Q-switch |
|
|
The crystals of Yttrium-Aluminum Garnet doped with three-valence
vanadium V3+ in tetrahedral position
suggest efficient q-switching for lasers operating in 1.3 µm
region. The absorption band between 1.0 - 1.5 µm is attributed
to 3A2
→3T2
transition of V3+ ion in tetrahedral
position of garnet lattice. The crystals are grown by oriented crystallization
method. Concentration of V3+ in tetrahedral
position is controlled by growth and annealing conditions.The efficient
q-switching of lasers operating at 1.3 micron has been obtained
with a number of active mediums such as YAG:Nd, YVO4:Nd,
KGd(WO4)2:Nd
under flash-lamp and laser diode pumping. |
SPECIFICATION:
| Initial transmission
|
5 - 95 % |
| Contrast |
5 - 6 |
| Thickness |
0.5 - 5 mm |
| Diameter |
5 - 7 mm |
| Ground-state absorption cross-section at 1.32 µm |
7.3 x 10-18
cm2 |
| Ground-state absorption cross-section at 1.06 µm |
3.0 x 10-18
cm2 |
| Relaxation
time of the exited state (3T2
→ 3A2
absorption) |
20 ns |
Application:
for short-pulse lasers of IR spectral range 1.06 - 1.4 µm
Publications:
A.M.Malyarevich, I.A.Denisov, K.V.Yamashev, V.P.Mikhailov, R.S.Conroy, B.D.Sinclair, "V:YAG - a new passive Q-switch for diode pumped solid state lasers", Appl. Phys. B 67 (1998), p. 555
| YAG:V3+ passive
Q-switch |
Cat.-No.:
D-100-01 |
|
|
|
Passive
Q-switch based on
NANOSIZED CRYSTALS IN GLASS CERAMICS |
|
|
The new saturable absorber is based on NANOSIZED CRYSTALS IN GLASS
MATRIX. It is transparent glass ceramics containing magnesium-aluminum
spinel nanocrystallites doped with tetrahedrally coordinated Co2+
ions. The material provides q-switching within the spectral interval
of 1200 - 1600 nm in particular for Yb-Er-glass laser (λ = 1.54
µm). Having the absorption cross-section of Co2+
at the wave length of 1.54 µm (transition 4A2
→ 4T1(4F))
significantly higher than emission cross-section of Er:glass, it
allows Q-switch operation without focusing radiation into the saturable
absorber. In comparison with single crystals the glass ceramics
is considerably cheaper. |
|
The glass ceramics technology is based on controlled nucleation
and crystallization of the glass and has several advantages over
conventional powder-processed ceramics as it uses glass preparation
technique. They are: 1) ease of flexibility of forming in glassy
state, 2) uniformity of microstructure, 3) reproducibility of properties
that results from starting glass. |
SPECIFICATION:
| Initial transmission
|
5 - 95 % |
| Thickness |
0.5 - 10 mm |
| Diameter |
5 - 100 mm |
| Ground-state
absorption cross-section at 1.54 µm |
(3.2 ± 0.4)
x 10-19 cm2
|
| Excited-state
absorption cross-section at 1.54 µm |
(5.0 ± 0.6)
x 10-20 cm2
|
| Relaxation
time of the exited state (4A2
→ 4T1(4F)
absorption) |
450 ± 150 ns |
Publications:
Uk Kang, O.S.Dymshits, A.A.Zhilin, T.I.Chuvaeva, G.T.Petrovsky, "Structural states of Co(II) in b-eucryptite-based glass-ceramics nucleated with ZrO2", J. Non-Cryst. Solids, 204, pp 151-157, 1996
| Passive Q-switch based on NANOSIZED CRYSTALS IN GLASS CERAMICS |
Cat.-No.:
D-110-01
|
|
|
|
Co+2:MgAl2O4
passive Q-switch |
|
Spinel crystal is a material having high optical damage threshold and
low optical losses in 1.3 - 1.6 µm spectral range. Co2+-activated
MgAl2O4
(Co:MALO, Co:spinel) can be used as a media for passive Q-switch of lasers
which operate in the spectral range of 1.3 - 1.6 µm, for example 1.32
µm and 1.44 µm Nd:YAG lasers, 1.31 µm iodine lasers and especially
1.54 µm erbium glass lasers.
High enough absorption cross-section of Co+2
ions together with practical absence of excited state absorption makes
this material a very efficient passive Q-switcher (that does not require
intracavity focusing) for various types of erbium glass lasers, including
diode-pumped microchips.
Technical Specifications:
| Absorption
band, µm |
1.3 - 1.6 |
| Operating transition |
4A2
-4T1
(4F) |
| Absorption
cross-section at 1.54 µm, cm2 |
2
x 10-19 |
| Bleached
state lifetime at 300°K, ns |
200 |
| Dopant
level, cm-3 |
2 x
10-17- 3 x
1019 |
| Initial
transmission, % |
10
- 99 |
| Initial
absorption coefficient at 1.54 µm, cm-1 |
0.06
- 10 |
| Aperture,
mm |
5
- 12 |
| Plate
thickness, mm |
0.2
- 5 |
| Co+2:MgAl2O4
passive Q-switch |
Cat.-No.: D-120-01 |
|
|
|
Acousto-optical Q-switch |
|
Product Description
| Interaction
medium of Q-switch |
crystal
Quartz |
| Heat
exchanger |
stainless
steel |
| Operating
wavelength |
1064
nm |
| Operating
frequency |
50
MHz |
| Active
apertures |
3
x 10 mm2 |
| Dynamic
insertion loss per pass |
70%
(for 25 W r.f.) |
| AR-Coating: |
|
| Reflectivity |
0.1%
per surface |
| Damage
threshhold |
500
MW/cm2 |
| VSWR |
1.2 : 1 |
| Optical
polarization |
any |
| Beam
divergence |
<
5 mrad |
| Optical
wavelength |
755
nm, 1660 nm, 2130 nm or as required |
| Dimensions/Connectors: |
|
|
|
Operating frequency and active aperture are available to customers specifications.
Driver is available.
| Acousto-optical
Q-switch |
Cat.-No.:
D-130-01 |
|
|
|
27 MHz Q-switch driver |
|
Q-switch driver is a solid state RF Power Source designed to furnish the
ultrasonic drive power for acousto-optical Q-switch. Driver has three
separate modes of operation: (1) EXTERNAL INPUT; (2) INTERNAL PULSE GENERATOR
of 10 kHz; (3) INTERNAL PULSE GENERATOR of 10 - 50 kHz.
In the mode EXTERNAL INPUT a pulse repetition frequency and a pause duration
are programmed from externally supplied TTL voltage input. The frequency
of INTERNAL PULSE generator may be adjusted with the use of a screw driver.
Pause duration is unadjustable and equals - 10 mcs.
In order to operate the driver in external pulse mode the MODE selection
switch is to be set to the position MODE IN. Zero Volt input will result
in zero output RF power; +5 V input applied to the connector MODE IN will
result in 35 W RF power output.
In order to operate the driver in the automatic pulse mode the selection
switch must be set to the position MODE OUT.
Two frequency ranges are provided for operation of the built-in pulse
generator. In order to set up a particular frequency the frequency range
selector can be switched to the position "2 - 10 kHz" or "10 - 50 kHz".
The frequency is adjusted with the use of the screw-driver turning a screw
located under a hole marked with letter F. The voltage of the built-in
pulse generator is controlled by a connector marked as "OUT". The Q-switch
is designed for built-in operation. In order to provide better cooling
a radiator is to be located on the top of the unit. The upper temperature
limit for the Q-switch driver is 50°C.
Specifications
| RF
Power output |
35
W |
| Output
impedance |
50 Ohm |
| Frequency |
27
± 0.5 MHz |
| Frequency
stability |
3 x
10-4 |
| External input
voltage |
0
or +5 V |
| Input
impedance |
2000
Ohm |
| Internal
mode frequency |
2
- 10 KHz |
| Pulse
repetition |
10
- 50 KHz |
| External
power supply voltage |
27 V |
| External
power supply current |
3
A |
| 27
MHz Q-Switch driver |
Cat.-No.:
D-141-01 |
| 27
V / 5 A DC Power supply |
Cat.-No.:
D-142-01 |
|
|
|
Solid
state Raman shifter |
|
New availabilities for frequency conversion
The Solid state Raman shifter RS-14 is an easy in operation device
for expansion of the tuning range of a Ti:Sapphire laser. In the Shifter
are used innovative technology Ba(NO3)2
crystals. The crystal unique properties, such as: optical homogeneity,
1047 cm-1 shift, wide transparency range
allows utilization of these crystals for frequency conversion (practically)
in any (360 to 1500 nm) spectrum regions.
Unlike gaseous Raman shifters, there is no high pressure, complete safety
of operation, low input threshold powers - all this provides you with
additional ease of the usage.
The RS-14 provides highly efficient conversion of tunable radiation
from a Ti:Sapphire laser to tunable radiation of stimulated Raman scattering
at 1st, 2nd and 3rd Stokes components. The optimum conversion in the
RS-14 is achieved at pump with a Ti:Sapphire laser operating in the
wavelength range from 815 to 900 nm. It allows to generate the tunable
narrow-linewidth radiation from 690 to 1245 nm at the output.
Used for radiation conversion Ba(NO3)2 crystal
is located in the optimized cavity. Such an arrangement ensures high
efficiencies of the laser output conversion to the 1st or 2nd stokes
(30% or higher) along with a comparatively low output beam divergence
(1.5 mrad), enabling thus further non-linear conversion of radiation.
The diagram below illustrates the principle of the RS-14 operation.
The Ti:Sapphire pump wavelength range is divided into two Subranges. Subrange
I refers to the operational wavelength range 815-960 nm, while Subrange
II corresponds to the operational wavelength range 850-900 nm of Ti:Sapphire.
By choosing Type I or Type II tunability range and using one from the
available 6 pairs of cavity mirrors, tunable radiation with the parameters
as follows can be established at the RS-14 output:
| For
Ti:Sapphire output from 815 to 860 nm (Subrange I), the RS-14
provides: |
|
- 1st Stokes component in the 890-950 nm range |
max.
eff. appr. 35% |
|
- 2nd Stokes component in the 980-1050 nm range |
max.
eff. appr. 30% |
|
- 3rd Stokes component in the 1090-1170 nm range |
max.
eff. appr. 20% |
| For
Ti:Sapphire output from 850 to 900 nm (Subrange II), the RS-14
provides: |
|
- 1st Stokes component in 980-990 nm range |
max.
eff. appr. 35% |
|
- 2nd Stokes component in 1030-1120 nm range |
max.
eff. appr. 25% |
|
- 3rd Stokes component in 1160-1245 nm range |
max.
eff. appr. 20% |
In the RS-14 are used 6 pairs of specially designed changeable cavity
mirrors. By changing one mirror pair for another, highly-efficient generation
of tunable radiation of the 1st, 2nd and 3rd Stokes components individually
or together can be established at the RS-14 output. Low alignment requirements
of the cavity mirrors together with ease of their replacement simplify
the laser alignment procedure for operation in the wavelength range desired.
Telescopic / focusing system that comes together with the converter, allows
the RS-l4 to be adapted to any pump laser.
Pumping sources and tunability ranges:
| Pump
Laser Type |
|
Input,
nm |
Output,
nm, 1 stokes |
Output,
nm, 2 stokes |
| Nd:YAG |
|
1064 |
1197 |
1369 |
| Nd:YAG |
|
532 |
563 |
599 |
| Ruby |
|
694 |
748 |
812 |
| Ti:Sapphire |
from |
900 |
993 |
1109 |
|
|
to |
1000 |
1117 |
1265 |
| Forsterite |
from |
1180 |
1346 |
1567 |
|
|
to |
1340 |
1558 |
1869 |
We can complete the RS-14 Shifter with the following options:
- A set of mirrors to provide simultaneous generation of the 1st, 2nd and 3rd Stokes radiation components.
- Wide-band dichroic coating for expanding of the tuning range for your Ti:Sapphire and Forsterite lasers.
- Telescopic system to ensure optimum power densities in a Ba(NO3)2
crystal.
- Second harmonic generator to expand the tunability range from 350 to 620 nm
- Tunable Ti:Sapphire Laser
- Tunable Forsterite Laser
| Solid
state Raman shifter RS-14 |
Cat.-No.:
D-150-01 |
|
|
|
Optical shutter |
|
|
OPTICAL SHUTTER BASED ON FRUSTRATED TOTAL
INTERNAL REFLECTION
The shutter is designed for fast optical switching of laser light beams. Its main features are as follows: |
|
- Mechanically rigid design
- High (≥ 95%) open state and low (≤ 10%) closed state transparency
- Low driving voltage (≤ 300V)
- Possibility to operate with unpolarized light
- Switching time: down to 250 ns
- Wide spectral region (0.3 - 2.0 µm)
- Optical aperture: dia. 4 - 10 mm
- Overall dimensions (25 - 60)mm x (25 - 60)mm x (25 - 60)mm
Truncated fused silica piramides (1) are connected with each other
by the layer (2). The gap (3) between the prisms can be varied by piezoelectric
cells mounted on truncated facets of the both pyramides. (4) - Piezodriver.
We can complete the FTIR Scutter with control unit
| Optical
shutter |
Cat.-No.:
D-160-01 |
| Shutter
control unit |
Cat.-No.:
D-161-01 |
|
|
|
Laser scanning system |
|
Advanced high performance acousto-optical scanning system is able to project
text or graphic dynamic information or a laser film on a large screen.
The instrument is specially designed for the high power lasers operating
in visible spectral range (from blue to red). The heart of the LSS is
original two-coordinate acousto-optical deflector based on of Paratellurite
single crystal.
The system is intended for indoor/outdoor operations with the following
application aim: in advertisements and show business entertainment.
The LSS consists of an integrated acousto-optical system, XY external
driver and PC interface card. The integrated acousto-optical system consists
of input beam-forming optics, XY AO deflectors, in intermediate objective
and projection objective with zoom capability.
Specifications:
| Acousto-optical material |
TeO2 |
| Working wavelength |
single wavelength only
from the visible band from 488 to 660 nm |
| Input polarization |
linear |
| Laser mode |
TEM00 |
| Number of resolved spots
(Rayleigh criterion) on the screen |
256 x 256 |
| Screen size |
up to 15 x 15 m |
| Distance to the screen |
up to 200 m |
| Laser power |
up to 20 W |
| System weight (driver included) |
less than 8 kG |
| Mode of operation |
close to linear scanning
mode |
The laser animation can be created by means of the specially designed
computer program - film editor which is able to create and to demonstrate
the frame sequences of arbitrary size. Any frame can be created either
by PCX or GIF picture importing, or by means of the internal vector graphic
editor. DOS text files can also be imported. The film editor allows to
create a very smooth and continuous animation as well as different text
effects. The laser animation can be demonstrated by means of a special
plaing program. During the demonstration it is possible to vary its speed
and to fit options, e.g. output picture turning and mirror reflections.
| Laser
scanning system |
Cat.-No.:
D-172-01 |
|
|
|
Erbium glass laser head |
|
| We offer a miniature Q-switched by
a frustrated total internal reflection (FTIR) shutter ERBIUM
GLASS LASER HEAD. |
|
Technical parameters:
| Emission
wavelength, µm |
1.54 |
| Output
energy, mJ |
8
- 10 |
| Pulse
duration halfwidth, ns |
50
- 100 |
| Pulse
repetition rate, pps |
up
to 0.1 |
| Overall size, mm3 |
30 x 30 x 120 |
| Pump
energy, J |
up
to 15 |
| Pump
pulse duration, ms |
0.6
- 1.2 |
| FTIR
shutter driving voltage, V |
<
350 |
The device can be additionally supplied with FTIR shutter control unit.
| Erbium glass laser head |
Cat.-No.:
D-180-01 |
| Shutter
control unit |
Cat.-No.:
D-181-01 |
|
