Authors

Citation

J. Arnaud, PHOTON-NUMBER VARIANCE IN LASER-DIODES WITH QUIET PUMPS, Journal of the Optical Society of America. B, Optical physics, 14(9), 1997, pp. 2193-2196

Citations number

8

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Optics

Journal title

ISSN journal

0740-3224

Volume

14

Issue

9

Year of publication

1997

Pages

2193 - 2196

Database

ISI

SICI code

0740-3224(1997)14:9<2193:PVILWQ>2.0.ZU;2-X

Abstract

A previously reported expression [Opt. Quantum Electron. 27, 63 (1995)
] for the variance of photon number m in a laser diode driven by nonfl
uctuating currents is generalized to account for spontaneous carrier r
ecombination. The semiclassical theory used here yields Q = (Delta m(2
))/m - 1 = b + (n/m)/(1 + b) - 1/2, where n is the average carrier num
ber and b is the spontaneous-to-stimulated rate. ratio. This expressio
n is in exact agreement with a recently reported quantum-theory result
[J. Opt. Sec. Am. B 13, 761 (1996)]. At high power, b approximate to
0 and m much greater than n imply that (Delta m(2)) = [m]/2, i.e. subP
oissonian internal-field statistics. The Q factor that relates to carr
ier number is given by the same expression, except that the first b te
rm is missing. Practical means of measuring the photon-number variance
and the role of spectral-hole burning are briefly discussed. (C) 1997
Optical Society of America.