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DPSS
Nd:YAG / Nd:YVO4, linearly polarized
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Compact
conduction cooled, Crystal Quartz
-
2mm
active aperture
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A
compact, conduction-cooled, acousto-optic Q-Switch for use in DPSS Nd:YAG &
Nd:YVO4
lasers.
Utilising the same manufacturing technology as our industry standard, high power
QS24/27 series, these compact devices offer unrivalled reliability through
superior optical quality and coatings.
They can also be customised to feature alternative frequencies, active
apertures and housing designs, our team of scientists will be pleased to discuss
variations with you. |
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1.
Air-cooled QS041-10G-GH12
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Optimised
for use with linearly polarised beams of up to 2.0mm diameter, offering loss
modulation figures exceeding 85%. Utilising Crystal Quartz as the interaction
material to give increased efficiency and high thermal transfer properties
allowing use at RF powers of up to 15W, conduction-cooled. |
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Interaction
Material |
Crystal
Quartz |
 QS041-10G-GH12
in PDF |
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Wavelength
|
1047
to 1064nm |
|
Polarisation
|
Linear,
vertical to base |
|
Anti-Reflection
Coating |
<
0.2% per surface |
|
Damage
Threshold |
>
500MWcm-2
(1GWcm-2
typical)
|
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Transmission
(single pass) |
>
99.6% |
|
Frequency
|
40.68MHz
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VSWR
|
<
1.2:1 (50Ω
input
impedance) |
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Active
Aperture |
2.0mm
|
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Clear
Aperture |
3.0mm
|
|
Acoustic
Mode |
Compressional
|
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Rise-Time
/ Fall-Time |
109ns/mm
|
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Loss
Modulation |
>
85% at 15W |
|
Beam
Separation |
7.3mrad
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Acceptance
Angle (full) |
6.1mrad
|
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RF
Power Rating |
15W
cw |
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Cooling
|
Conduction
through base |
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Dimension |
56.5x38.2x30mm |
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Driver
Model: |
R38041-15DMA05 or
R39041-15DMFPS
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2.
Air-cooled QS041-10G-GH15
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Optimised
for use with unpolarised beams of up to 1.4mm diameter, |
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Model
Number |
QS041-10G-GH15 |
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Interaction
Material |
Crystal
Quartz |
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Wavelength |
1047
to 1064nm |
|
Polarisation |
Unpolarised
or polarised beam |
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Anti-Reflection
Coating |
<
0.2% per surface |
|
Damage
Threshold |
>
500MWcm2
|
|
Transmission
(single pass) |
>
99.6% |
|
Frequency |
40.68MHz |
|
VSWR |
<
1.2:1 (50Ω
input
impedance) |
|
Active
Aperture |
1.4mm |
|
Clear
Aperture |
3.0mm |
|
Acoustic
Mode |
Compressional |
|
Rise-Time
/ Fall-Time |
109ns/mm |
|
Loss
Modulation |
>
80% at 15W |
|
Beam
Separation |
7.3mrad |
|
Acceptance
Angle (full) |
6.1mrad |
|
RF
Power Rating |
15W
max |
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Cooling |
Conduction
through base |
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Dimension |
56.5x38.2x30mm |
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Q-switch
driver |
N38041-15DMA05 or
R39041-15DMFPS
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|
GH12 or GH15 can be used with polarised beam. The
GH15 has a slightly smaller active aperture so it is better for small
beam diameters or where they don’t quite get enough hold-off with a
GH12. |
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3.
Air-cooled QS041-10G-SO3
(QS041-10G-LV3) |
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Device |
AO
Q-Switch |
 |
|
Interaction material |
Crystal Quartz |
|
Wavelength |
1047 to 1064nm |
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Damage threshold |
>
500MW/cm2 |
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AR
coating reflectivity |
<
0·2% per surface |
|
Transmission |
>
99·6% |
|
Frequency |
40.68MHz |
|
VSWR |
<
1.2:1 at 40.68MHz |
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Optical polarisation |
Linear, vertical to base |
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Active aperture |
1.6mm |
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Acoustic mode |
Compressional (Longitudinal) |
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Rise-time (10-90%) |
109ns/mm |
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Loss Modulation |
³85% |
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RF wire length |
8cm (-LV3) or 20cm (-SO3) |
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Dimension |
35x35x24mm |
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RF
driver |
N38041-15DMA05 or
R39041-15DMFPS
or R39041-20DMFPS |
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4.
Air-cooled QS041-10G-WC1 |
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Device |
AO
Q-Switch |
 |
|
Interaction material |
Crystal Quartz |
|
Wavelength |
1047 to 1064nm |
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Damage threshold |
>
500MW/cm2 |
|
AR
coating reflectivity |
<
0·2% per surface |
|
Transmission |
>
99·6% |
|
Frequency |
40.68MHz |
|
VSWR |
<
1.2:1 at 40.68MHz |
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Optical polarisation |
Linear, vertical to base |
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Active aperture |
1.6mm |
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Acoustic mode |
Compressional (Longitudinal) |
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Rise-time (10-90%) |
109ns/mm |
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Loss Modulation |
³85% |
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Dimension |
39.5x35x22mm |
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RF
driver |
N38041-15DMA05 or
R39041-15DMFPS
or R39041-20DMFPS |
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5.
Air-cooled QS041-10G-GH21
and QS041-10G-LV6 |
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Model No |
QS041-10G-GH21 |
QS041-10G-LV6 |
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Device |
AO Q-Switch |
AO Q-Switch |
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Interaction material |
Crystal Quartz |
Crystal Quartz |
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Wavelength: Damage threshold |
1047 to 1064nm > 1GW/cm2 |
1047 to 1064nm > 1GW/cm2 |
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AR coating reflectivity |
< 0·2% per surface |
< 0·2% per surface |
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Transmission |
> 99·6% |
> 99·6% |
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Frequency |
40.68MHz |
40.68MHz |
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Optical polarisation |
Linear, vertical to base |
Linear, vertical to base |
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Active aperture |
1.8mm |
1.8mm |
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Acoustic mode |
Compressional |
Compressional |
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Rise-time (10-90%) |
113ns/mm |
113ns/mm |
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Loss Modulation |
≥ 85% |
≥ 85% |
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RF Power |
20W (Max) |
20W (Max) |
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RF driver |
N38041-15DMA05 or
R39041-15DMFPS
or R39041-20DMFPS |
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Housing |
 |
 |
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6.
Air-cooled QS068-4J-xxx |
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Cooling |
Conduction cooled
through base |
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Device |
AO Q-Switch
|
 |
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Model No |
QS068-4J-xxx
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Interaction material |
Fused Silica
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Wavelength |
1540nm
|
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Damage threshold |
> 500MW/cm2 |
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AR coating reflectivity |
< 0.2% per surface
|
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Transmission |
> 99.6%
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Frequency |
68MHz
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Optical polarisation |
Random
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Active aperture |
1.0mm
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Acoustic mode |
Shear
|
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Rise-time |
120ns
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Modulation Bandwidth
(3dB) |
4.2MHz
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Separation Angle |
28mrad
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Diffraction Efficiency |
> 10% @ 6W
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Maximum recommended RF
Power |
10W
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Q-switch driver |
N39068-10DSA05 |
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7. Air-cooled Q-switch
QS080-2G-3D1 |
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• DPSS systems, polarisation insensitive
• Miniature size, conduction-cooled
• 1.0mm active aperture
Gooch & Housego present probably the smallest,
conduction-cooled, acousto-optic Q-Switch currently in production
anywhere in the world. Specifically designed for use in miniature,
short-pulse, low power, DPSS lasers, the tiny size of this device
facilitates Q-Switching of the shortest cavities.
Utilising a highly efficient crystalline interaction
material, greater than 85% loss modulation can be achieved without the
need for active cooling - just bolt the Q-Switch to the laser rail and
switch on!
Operating at 80MHz carrier frequency, the diffracted
beams are sufficiently separated for most short cavities and pulse
repetition rates of 100kHz or more are possible. |
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Interaction Material |
Tellurium Dioxide |
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Wavelength |
1047 to 1064nm |
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Polarisation |
Insensitive |
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Anti-Reflection Coating |
< 0.2% per surface |
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Damage Threshold |
> 10MWcm-2 |
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Transmission (single pass) |
> 99.5% |
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Frequency |
80MHz |
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VSWR |
< 1.2:1 (50Ω input impedance) |
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Active Aperture |
1.0mm |
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Clear Aperture |
1.4mm |
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Acoustic Mode |
Compressional |
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Rise-Time / Fall-Time |
153ns/mm |
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Loss Modulation |
> 85% at 3W (typical) |
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Beam Separation |
20mrad |
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Acceptance Angle (full) |
12mrad |
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RF Power Rating |
3W cw |
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Cooling |
Conduction through base |
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Dimension |
19x9.6x16.5mm |
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RF Driver |
R39080-3DMzzz |
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Application Notes:
l The
surface should be kept clean and dry. If the surface is contaminated,
the surface will easily be burnt due to high power laser beam.
l The
cooling water should be de-ionised water or distilled water. Please do
not use city water as cooling water. Otherwise, the cooling channels
will be corrupted and then the Q-switch will be damaged.
l The
damage caused by non-proper use is not within the warranty. |
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Fibre-coupled
AO Q-switch M080-2G-F2G,
M111-2G-F2S,
M175-2G-F2S |
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Frequently
Asked Questions Water-cooled
Q-switch Q-switch
drivers EO
Q-switches |
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Basics of Acousto-Optic Q-switch
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