On the linewidth of microcavity lasers

Gunnar Björk; Anders Karlsson; Yoshihisa Yamamoto

doi:10.1063/1.106693

On the linewidth of microcavity lasers

Gunnar Björk, Anders Karlsson, Yoshihisa Yamamoto

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86 Scopus citations

Abstract

In a recent letter by G. P. Agrawal and G. R. Gray [Appl. Phys. Lett. 59, 399 (1991)] the frequency and phase noise of vertical-cavity surface-emitting microlasers is calculated using rate equations and Langevin noise sources. In this letter we re-examine their calculations and get different results. Specifically, we predict that an increase of the spontaneous emission coupling coefficient will not necessarily lead to an increase in linewidth. It is also found that the reported "anomalous linewidth enhancement" is present in all lasers with a nonzero linewidth enhancement factor.

Original language	English
Pages (from-to)	304-306
Number of pages	3
Journal	Applied Physics Letters
Volume	60
Issue number	3
DOIs	https://doi.org/10.1063/1.106693
State	Published - 1992
Externally published	Yes

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abstract = "In a recent letter by G. P. Agrawal and G. R. Gray [Appl. Phys. Lett. 59, 399 (1991)] the frequency and phase noise of vertical-cavity surface-emitting microlasers is calculated using rate equations and Langevin noise sources. In this letter we re-examine their calculations and get different results. Specifically, we predict that an increase of the spontaneous emission coupling coefficient will not necessarily lead to an increase in linewidth. It is also found that the reported {"}anomalous linewidth enhancement{"} is present in all lasers with a nonzero linewidth enhancement factor.",

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AU - Karlsson, Anders

AU - Yamamoto, Yoshihisa

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AB - In a recent letter by G. P. Agrawal and G. R. Gray [Appl. Phys. Lett. 59, 399 (1991)] the frequency and phase noise of vertical-cavity surface-emitting microlasers is calculated using rate equations and Langevin noise sources. In this letter we re-examine their calculations and get different results. Specifically, we predict that an increase of the spontaneous emission coupling coefficient will not necessarily lead to an increase in linewidth. It is also found that the reported "anomalous linewidth enhancement" is present in all lasers with a nonzero linewidth enhancement factor.

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JO - Applied Physics Letters

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On the linewidth of microcavity lasers

Abstract

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