A Fabry–Perot laser diode is operating at 1750 nm. The Laser Diode has a cavity length of 400 μm. The refractive index of semiconductor used is approximately 3.2 and dn/dT= 2.5 × 10-.?^-1. Find the shift in the emission wavelength for a given mode per unit temperature change.

A Fabry–Perot laser diode is operating at 1750 nm. The Laser Diode has a cavity length of 400 μm. The refractive index of semiconductor used is approximately 3.2 and dn/dT= 2.5 × 10-.?^-1. Find the shift in the emission wavelength for a given mode per unit temperature change.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter9: Condensed Matter Physics

Section: Chapter Questions

Problem 56P: The measured density of a KCl crystal is 1.984 g/cm3. What is the equilibrium separation distance of...

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Question

A Fabry–Perot laser diode is operating at 1750 nm. The Laser Diode has a cavity length of 400 μm. The
refractive index of semiconductor used is approximately 3.2 and dn/dT= 2.5 × 10-.?^-1. Find the shift
in the emission wavelength for a given mode per unit temperature change.

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Step 1: Given data

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Step 2: Let's first calculate the free spectral range (FSR) of the Fabry-Perot cavity:

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Step 3: the frequency difference to wavelength difference using the speed of light:

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