Answered: A DH injection laser has an optical…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A DH injection laser has an optical cavity of length 320 μm and width120 um. At normal operating temperature the loss coefficient is 12 /cm and the threshold current density for the device is 2.5 x 10¹A/cm². The mirror reflectivity at each end of the optical cavity is 0.55 and 0.6. It may be assumed that the current is confined to the optical cavity. Estimate the gain factor ß, the threshold current and threshold gain for the device

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