Enhanced experimental phe-

nomena with drive voltage

Vmax ≥ 1600 V

Clear process observation

from uniaxial crystal to biaxial

crystal

Observe and measure electro

-optic modulation on wave-

form

High sensitivity photoreceiver

for stable waveform output

Detailed instruction manual

LEOI-34A Experimental System for Crystal

Electro-Optic Effect

Electro-optic effect is a change in the refractive index of a crystal as

induced by an electric field. By using a laser amplitude modulator em-

ploying the transverse electro-optic effect of a typical LiNbO3 crystal,

students can conduct the following experiments:

1. understand electro-optic effect and its applications.

2. measure half-wave voltage and electro-optic coefficient of crystals.

3. observe change in optical properties of crystals due to EO effect.

4. observe interference of focused polarized light caused by EO effect.

5. conduct demonstration of laser communication via EO effect.

Construct, Conduct & Comprehend Physics Experiments

Interference patterns of polarized light

Experimental Contents

Parts & Specifications

Note: above product information is subject to change without notice.

1. Study optical axis characteristics of LiNbO3 crystal in absence and presence of driving voltage 2. Observe electro-optic modulation phenomenon 3. Measure half-wave voltage of electro-optic crystal 4. Calculate electro-optic coefficient 5. Demonstrate optical communication using electro-optic modulation technique

Optical bench Length: 0.8 m 1

Main unit Drive voltage Vmax ≥ 1600 V with built-in speaker 1

Diode laser 4 mW at 650 nm with 2-D adjustable holder 1

Polarizer Incl holder 2

LiNbO3 crystal Clear aperture: 5 mm × 5 mm with 3-D adjustable holder 1

Laser power meter (LLM-1) 3-1/2 digits Scale: 200 μW, 2 mW, 20 mW, 200 mW Resolution: 0.1 μW

1

Photo diode detector Incl 2-D adjustable holder, ±2.5 mm 1

Beam expander lens Incl 2-D adjustable holder, 40 X 1

λ/4 wave plate 1

White screen 100 mm × 80 mm 1

Audio source MP3 1

Slide 6

Cable BNC cables (3) and audio cable (1) 4

Power cord 1

Instruction manual 1

Construct, Conduct & Comprehend Physics Experiments

Schematic of electro-optic modulation

Lambda Scientific Systems, Inc. 16300 SW 137th Ave, Unit 132 Miami, FL 33177, USA Phone: 305.252.3838 Fax: 305.517.3739 E-mail: sales@lambdasys.com Web: www.lambdasys.com