仪器对比
关注
High Resolution IR Modulators (1 to 2.5 ìm)
UV-VIS-IR Modulators (0.2 to 1.3 μm)
IR Modulators (2.0 to 11.0 ìm)
High Bandwidth VIS-IR Modulators (.6-1.6 ìm)
IR Modulators (1.15 to 1.60 ìm)
High Speed UV-VIS-IR Modulator (0.38 to 1.6 ìm)
Optical Assembly for Acousto-Optic Modulators
The optical module for Acousto-Optic modulators consists of a focusing lens, A-O device
positioners, and a recollimating lens. The incoming light is focused inside the A-O device and the beam
diameter at the focal point is a function of the required rise time and modulation bandwidth. The type of
lenses used depends upon the A-O device and its speed requirements, which will define the module size and
lens positions. Typical dimensions are shown in the above figure.
技术参数：
High Resoluton UV-VIS-IR Modulator (0.38 to 1.6 ìm)
Models TEM-85-2, TEM-85-10, TEM-110-25, TEM-200-50,TEM-400-100, & TEM-800-200 TEM-85-2 TEM-85-10 TEM-110-25
Data Performed @ 500 nm 500 nm 633 nm
Optical Power Density 5 Watts/mm2 5 Watts/mm2 5 Watts/mm2
Center Frequency 85 MHz 85 MHz 110 MHz
Active Aperture 2.0 mm 1.0 mm 0.3 mm
Beam Diameter Inside Crystal 1.4 mm 0.3 mm 0.1 mm
Rise Time 280 ns 55 ns 22 ns
Digital Modulation Bandwidth 2 MHz 10 MHz 25 MHz
Analog Video Bandwidth 1.3 MHz 6.3 MHz 16 MHz
Optical Transmission > 95 % > 95 % > 95 %
Diffraction Efficiency 80 % 75 % 70 %
Wave Front Distortion ë/10 ë/10 ë/10
Bragg Angle (mrad) 5 5 8.5
Separation Angle 10 10 17
Acoustic Velocity 4.2 E+3 m/sec 4.2 E+3 m/sec 4.2 E+3 m/sec
Maximum RF Power 1 W 1 W 0.5-1 W
V.S.W.R. 2:1 2:1 2:1
Input Impedance 50 ohms 50 ohms 50 ohms
Optical Polarization Linear, perpendicular to sound direction
Case Type # 30 # 30 # 200
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