ELECTRO-OPTICAL PRODUCTS CORPORATION
88-65 76th Avenue • Glendale, NY 11385, USA • Tel: 718-997-8100 • Fax: 718-997-8102 • www.eopc.com

Acousto-Optic Modulator
MTS-110/A3-VIS
FEATURES AND ADVANTAGES
  • Large aperture modulator
  • Modulation bandwidth 200 KHz
  • High efficiency





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Acousto-optic modulators are used to vary and control laser beam intensity. A Bragg configuration gives a single first order output beam, whose intensity is directly linked to the power of RF control signal. The rise time of the modulator is simply deduced by the necessary time for the acoustic wave to travel through the laser beam. For highest speeds the laser beam will be focused down, forming a beam waist as it passes through the modulator.

EOPC offers a wide range of modulators with associated drivers. The set is optimized to offer the best performances (rise time, extinction ratio, etc.). The RF driver features all the necessary components to drive the modulator with analog or digital input control. Both a low cost OEM version and complete laboratory version (boxed) are offered. The laboratory version is a versatile turn-key tool for fast set-up and allows the user to have amplitude modulation capabilities from front panel (DC modulation) or from an external signal.

Up to 12 distinct lines can be mixed and separately modulated using a Polychromatic Modulation System.

Applications for acousto-optic modulators include laser printing, video disk recording, laser projection systems.



  ACOUSTO-OPTIC
 Model 
 MTS-110/A3-VIS 
 Material 
 TeO2 
 Acoustic Velocity (m/s) 
 650 (typ) 
 Optical Wavelength Range1 (nm) 
 488-635 
 Optical Transmission (%) 
 >95 
 AO Interaction Type 
 Birefringent 
 Optical Input Polarization 
 Optical First Order Polarization 
 linear // to base plate 
Linear | 
 Active Aperture (mm) 
 3 × 3 
 Carrier Frequency (MHz) 
 110 
 Diffraction Efficiency (%) 
 (with linear // polarization) 
 >=85 (typ 90) 
 Bragg Incidence Angle 
 depending on wavelength 
 Separation angle (mrad) 
 (order 0 - order 1) 
 90 @ 532 nm 
 Rise Time (usec/mm) 
 1 
 Analog Modulation Bandwidth (-3dB) (KHz) 
 <=200 
 Static Extinction Ratio (1st order) 
 <=2000/1 
 Max Optical Power Density (W/mm2
 typ 5 

  ELECTRICAL
 Input Impedance (ohms) 
 50 
 Maximum RF Power (W) 
 <1 
 V.S.W.R. 
 <1.5/1 (typ) 
 Associated Driver 

  PHYSICAL/ENVIRONMENTAL
 Connector Type 
 SMA 
 Size (mm × mm × mm) 
 50.9 × 22.4 × 15.8  
 Weight (g) 
 50 
 Operating Temperature (°C) 
 10 to 40 

1V-coating upon request in [488-1100], transmission >98%


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