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 DESCRIPTION CAD DRAWINGS

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   MOD-110-1W    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%