Linewidth enhancement factor of a type-I quantum-cascade laser

M. Lerttamrab; S. L. Chuang; C. Gmachl; D. L. Sivco; F. Capasso; A. Y. Cho

doi:10.1063/1.1611285

Linewidth enhancement factor of a type-I quantum-cascade laser

M. Lerttamrab, S. L. Chuang, C. Gmachl, D. L. Sivco, F. Capasso, A. Y. Cho

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Abstract

The linewidth enhancement factor of a type-I quantum-cascade laser was investigated. The optical gain spectra of the laser was extracted for the wavelength of 8.2 μm. Results showed a change in refractive index with increased bias current. The linewidth enhancement factor was found to be -0.5. A group index of around 3.47 was also determined.

Original language	English (US)
Pages (from-to)	5426-5428
Number of pages	3
Journal	Journal of Applied Physics
Volume	94
Issue number	8
DOIs	https://doi.org/10.1063/1.1611285
State	Published - Oct 15 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.1611285

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abstract = "The linewidth enhancement factor of a type-I quantum-cascade laser was investigated. The optical gain spectra of the laser was extracted for the wavelength of 8.2 μm. Results showed a change in refractive index with increased bias current. The linewidth enhancement factor was found to be -0.5. A group index of around 3.47 was also determined.",

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AU - Lerttamrab, M.

AU - Chuang, S. L.

AU - Gmachl, C.

AU - Sivco, D. L.

AU - Capasso, F.

AU - Cho, A. Y.

PY - 2003/10/15

Y1 - 2003/10/15

N2 - The linewidth enhancement factor of a type-I quantum-cascade laser was investigated. The optical gain spectra of the laser was extracted for the wavelength of 8.2 μm. Results showed a change in refractive index with increased bias current. The linewidth enhancement factor was found to be -0.5. A group index of around 3.47 was also determined.

AB - The linewidth enhancement factor of a type-I quantum-cascade laser was investigated. The optical gain spectra of the laser was extracted for the wavelength of 8.2 μm. Results showed a change in refractive index with increased bias current. The linewidth enhancement factor was found to be -0.5. A group index of around 3.47 was also determined.

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Linewidth enhancement factor of a type-I quantum-cascade laser

Abstract

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