ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 6

Pulse Current Automatic Electro-Optical Characterization of the Laser Diode

Oyedokun, ZO
Ahmadu Bello University, Zaria,

(Received 8 March 1989; accepted 6 September 1990)

Abstract

An automated pulse current testing of the laser diode is presented. Built around an accurate and fast rise time pulse generator and a minicomputer, it has been used to test several laser diodes to extract characteristics such as threshold current and thermal resistance. The computer-controlled pulse generator offers multivariable control of output pulse. Control and data acquisition algorithms were developed in a low level language, MACRO11, to enhance speed and resource utilization, and in FORTRAN, which facilitated the man/machine interface or manware. Continuous wave and pulse test results are compared to illustrate the heating effects.

Keywords:
semiconductor laser diodes, automatic measurement, synchronous measurement

Paper ID: JTE12550J
DOI: 10.1520/JTE12550J
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