Electro-Optic Deflector

  • Update:Jun 13, 2017
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ST Series electro-optic deflectors are the most efficient mechanisms for changing the angle of a laser beam. EOD can scan a laser beam over arange of angles or control the output angle of a laser beam.

Product Introduction

ST Series electro-optic deflectors are the most efficient mechanisms for changing the angle of a laser beam. EOD can scan a laser beam over arange of angles, or control the output angle of a laser beam with great accuracy. We employ a quadrapole electric field in an electro-optic material to produce a linear refractive index gradient proportional to the applied signal voltage.

Specifications of EODs:

Model ST310A ST311A ST312 ST312-2 ST412-2Axis
Aperture (mm) 2.5 2.5 2.7 2.7 2.0
Deflection efficiency 1.5urad/volt 3.0urad/volt 0.6urad/volt 1.2urad/volt 4urad/volt
Capacitance (pF) 100 185 50 100 40
Standard Spectral Range 400-750nm 400-750nm 400-1100nm 400-1100nm 700-1000nm/ 1000-2000nm
Length (mm) 118 219 71 125 110
UV/DUV Options Yes Yes Yes Yes No
Collinear Configuration NA Center In/ Center Out Center In/ Center Out Center In/ Center Out Center In/ Center Out

Specifications of Amplifiers:

Model ST302RM
Cabinet Driver and power supply in single cabinet
Test feature Built-in test feature allows testing for max transmission of Pockel Cell without adjusting bias voltage
Input impedance Choice of amplifier input impedance by rear panel switch (50ohm/1K ohm)
DC Bias Improved DC biasing of Pockel Cell provides greater linearity at higher bias voltages.
Voltage range +/- 450VDC controlled by ten-turn front panel pot. Digital meter monitors differential bias applied to E.O. Modulator
Linearity 10bits referenced to full scale (.1%)
Bandwidth DC-200kHz with 90pF load and 3M (RG-62) cables.
Max output drive level 750Vpp into 90pF load
Amplifier input signal 2Vpp max into 50/1k ohm delivers 750Vpp out
Input signal format Options include Unipolar positive, negative or bipolar
Input power (AC) 60W typical, both load(modulator) & frequency dependent
Dimensions 19” rack mountable, 5.25”H(133mm)(3U)x14”D(356mm)
Cooling Forced air
Operating environment Laboratory(indoor only), +5-+50°C, RH20-80%
Weight 20lbs (9.07kg)
Model ST412 2-axes ST25D
Cabinet Driver and power supply in single cabinet Driver and power supply in single cabinet
Input impedance Choice of amplifier input impedance by rear panel switch (50ohm/1K ohm) 50ohms
Gain 375V/V Each Amplifier +/- 400vDC
Max output drive level 750V P-P, each amplifier, driving 60pf load, 3m RG-62 cables 175V
Detected rise/fall time Typically 2.5us driving 60pf with 3m RG-62 coax 8ns
Input signal format Options include Unipolar POS/NEG or bipolar set by rear-panel slide switch TTL or Analog
Input power (AC) Typically 70W (load and frequency dependent) 300W
Dimensions 19” Rack Mountable, 5.25”H (133mm) (3U) x 14”D (356mm) 45cm W x 44cm L x 17.5cm H
Cooling Forced air Forced air
Operating environment For laboratory use (indoor only), +5-+50°C, RH 20%-80% up to 32°C, Altitude <3000m Designed for laboratory use (indoor only)
Weight 20lbs (9.07kg) 32lbs (14.51kg)

 

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