Comments on “Optical spectra of a semiconductor laser with incoherent optical feedback“

Author

Midgley, J.H.

Author_Institution

Phys. Lab., Kent Univ., Canterbury, UK

Volume

30

Issue

8

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1964

Lastpage

1965

Abstract

The author thanks J. S. Cohen et al.(see ibid vol. 26, p. 982-90, 1990) for their contribution to the literature on incoherent feedback to semiconductor laser diodes. He takes issue with the assertion therein that fully incoherent feedback to the laser diode has been produced. This is because of the presence of external-cavity modes around the laser´s main mode that are induced by the feedback mirror. The Wiener-Khinchine theorem states that the normalized power-spectral-density function and the normalized autocoherence function form a Fourier transform pair. An application of this theorem to an idealized single-mode laser line upon which are superposed external-cavity modes is shown

Keywords

Fourier transform optics; laser cavity resonators; laser modes; semiconductor lasers; spectral line breadth; Fourier transform pair; Wiener-Khinchine theorem; external-cavity modes; feedback mirror; idealized single-mode laser line; incoherent optical feedback; laser´s main mode; normalized autocoherence function; normalized power-spectral-density function; optical spectra; semiconductor laser diodes; Autocorrelation; Density functional theory; Diode lasers; Fabry-Perot; Laser feedback; Laser modes; Laser theory; Mirrors; Optical feedback; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.301665

Filename

301665