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Title: Calibrated feedback for laser diodes

Abstract

A method is described of calibrating the feedback output from the feedback light detector of the laser diode of an optical disk drive of a laser light pen which consists of mounting a first and a second resistor in a laser light pen; connecting the first resistor between the feedback light detector and ground; connecting the second resistor between the feedback light detector and a feedback output; operating the laser diode to produce a predetermined light power output; adjusting the resistance of the first resistor to produce a predetermined voltage at the feedback output; and adjusting the resistance of the second resistor to produce a predetermined impedance at the feedback output.

Inventors:
Publication Date:
OSTI Identifier:
5697494
Patent Number(s):
US 4584687
Assignee:
Optical Storage International, Minneapolis, MN NOV; EDB-86-110024
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 12 Dec 1983
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASERS; SEMICONDUCTOR DIODES; CALIBRATION; ELECTRIC CONDUCTIVITY; ELECTRIC IMPEDANCE; ELECTRIC POTENTIAL; FEEDBACK; PHOTORESISTORS; ELECTRICAL EQUIPMENT; ELECTRICAL PROPERTIES; EQUIPMENT; IMPEDANCE; PHYSICAL PROPERTIES; RESISTORS; SEMICONDUCTOR DEVICES; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Howard, P.G.. Calibrated feedback for laser diodes. United States: N. p., 1986. Web.
Howard, P.G.. Calibrated feedback for laser diodes. United States.
Howard, P.G.. 1986. "Calibrated feedback for laser diodes". United States. doi:.
@article{osti_5697494,
title = {Calibrated feedback for laser diodes},
author = {Howard, P.G.},
abstractNote = {A method is described of calibrating the feedback output from the feedback light detector of the laser diode of an optical disk drive of a laser light pen which consists of mounting a first and a second resistor in a laser light pen; connecting the first resistor between the feedback light detector and ground; connecting the second resistor between the feedback light detector and a feedback output; operating the laser diode to produce a predetermined light power output; adjusting the resistance of the first resistor to produce a predetermined voltage at the feedback output; and adjusting the resistance of the second resistor to produce a predetermined impedance at the feedback output.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1986,
month = 4
}
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