HW#10Assignment

HW#10Assignment - (bound electron-hole pair). Use their...

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EE540 (S’11) Homework Assignment #10. Toward the use of the FISH DIAGRAM. p. 1 of 1. This assignment continues the analysis of Paoli’s “laser A ” which we studied in homeworks #8 and #9. Assume that the CW output beam power P 1 of laser A is 0.08 Watts at diode current i = 3 Amps. With this datum, and the results posted in the assignments and solutions of homeworks #8 and #9, calculate the following for use in our diode laser “Model A” equations: (1) the product of the stimulated emission coefficient K s -1 and the natural decay time τ 2 of an exciton
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Unformatted text preview: (bound electron-hole pair). Use their definitions as given in Class Notes IV or Outline OII, where the inverse of this important product is given the name σ , and where it is noted that this product must be much less than 1 in order that the “FISH DIAGRAM” shown in OII be an accurate CW solution of the Model A equations. (2) the fraction f x of the entering electrons (and holes) that couple to form excitons inside the laser mode volume lwd . (3) the fraction F of the natural exciton decay events that result in the spontaneous emission of a photon. (4) The “Q” value of the laser mode....
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This note was uploaded on 01/17/2012 for the course EE 540 taught by Professor Hellwarth during the Spring '08 term at USC.

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