Free Space Acousto-Optic Q-Switches
Brimrose offers the most complete line of Acousto-Optic Q-switching systems for industrial and laboratory applications. The Brimrose free space Q-switches are designed for the highest conversion efficiency of RF energy into acoustic energy by attaching the transducer to the crystal with an advanced vacuum metallized process.
Q-switches are special modulators designed for use inside laser cavities. They are fabricated from high optical quality Fused Quartz, Flint Glass, and Tellurium Dioxide, or other acousto-optic materials with Brewster cut optical faces or durable hard oxide AR coatings for high optical power applications.
The Q-Switch Driver is an RF generator utilizing a micro-controller based phase-locked loop (PLL) synthesizer.
The frequency can be varied within the RF bandwidth of the AO Q-Switch
KEY FEATURES
• High Damage Threshold
• High Laser Peak Powers
• Lower Noise Performance
• Up to 80 MHz RF Frequency
• Analog Light Intensity Modulation
• Digital Switching On/Off
• Water or Thermoelectrically cooled
• Custom Configurations Available
APPLICATIONS
• Laser Marking, Laser Cutting
• Pulsed Holography
• Lithography
• 3D Microfabrication
• Medical (Surgery)
• Optical Data Storage
• OEM Designs
Model #
FSQ-24-2-BC FSQ-27-5-BC FSQ-80-5-BC
TEQ-27-4-BC TEQ-80-20-BC
Substrate
SiO2
Tellurium Dioxide (TeO2)
Laser Wavelength (nm)
Brewster Cut
Brewster Cut
1064 nm
1060 nm
2940 nm
800 nm
Active Aperture (mm)
2 mm
1 mm
1.5 mm
3mm
Center Frequency (MHz)
24
27
80
27
80
Digital Modulation Bandwidth (MHz)
2
5
6.5
3dB Bandwidth
4
20
Optical Transmission (%)
99.8
>99.5
Maximum Diffraction Efficiency (%)
30
25
>50
>65
Rise Time (nsec)
100
85
150/630
80/400
Acoustic Velocity
5.96E+3 m/sec
4.2E+3 m/sec
Wave Front Distortion
λ/10
Separation Angle
Separation Angle @1064 nm
1° @ 2940 nm
0.9° @ 800 nm
5 mrad
14mrad
Input Impedance
50 ohms
Optical Polarization
Linear (Perpendicular to acoustic wave)
Linear
Perpendicular to Acoustic Wave
V.S.W.R.
2.1:1
Other materials and models are available.
Driver Model #
FFH-XX-B2-FY FFH-XX-B3-FY
Frequency (MHz)
XX MHz (compatible with the AO Device)
Frequency Control
Quartz crystal referenced phased locked loop.
Frequency Accuracy (%)
0.015%
Harmonic Content (dBc)
≤ - 15
≤ - 10
Frequency Stability
0.0015% minimum after 15 minutes warm-up
Output Power
Power level is optimized for compatible AO device.
Output Protection
Power amplifiers used will tolerate an infinite V.S.W.R. without damage. Rated power is available only when
a proper RF load is connected.
Internal Pulse Generator
N/A
Pulse width: 100 to 500 nsec ± 10% adjustable, pulse generator with 5000 Hz to 100 KHz
rep rate adjustable. Front panel switch for pulse/standby operation.
Modulation
TTL Compatible
Pulse modulation, pulse monitor output via front panel BNC connector.
Rise/Fall Time
To match AO Q-switch requirements
External Modulation Input
330 W; 0-5 V
Internal or external trigger
Operating Power
90-240 VAC ± 25% 50-60Hz; 55W max.
Enclosure
The unit will be packaged in a 190 mm (7.5 inch) wide by 90 mm (3.5 inch) high by 220 mm (8.75 inch) deep
instrument case. The internal components are fan-forced air- cooled. The size is exclusive of connectors. A
detachable AC line cord and RF cable are provided.
Environmental
Nominal Laboratory Conditions: Maximum temperature is +35° C. The unit is not sealed against moisture or
condensing humidity.
The AO Q-Switch is provided with the associated RF drivers, and can be customized according to user requirements. OEM Packaging is also available.
In addition to the standard product shown, customer configurations are available for specialized applications.
商品属性 [波长] 1064/1060/2940/800nm [上升/下降时间] 100/85/150/630/80/400ns [活跃孔径] 2 mm/1 mm/1.5 mm/3 mm [操作频率] 24/27/80/27/80MHz [光学材料] SiO2/TeO2