External-cavity diode lasers with different devices and collimating optics

D. M. Kane; A. P. Willis

doi:10.1364/AO.34.004316

External-cavity diode lasers with different devices and collimating optics

D. M. Kane, A. P. Willis

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Comparative operating characteristics of external-cavity diode lasers (ECDL’s) with either a channel substrate planar device or a multi-quantum-well (MQW) device are presented. These include the output beam profile, which is significantly altered depending on the collimating lens used (either multielement or graded index), power versus injection-current characteristics, and the optical frequency and the rf spectra. The coherence lengths of the different laser diode–collimating-lens combinations in the ECDL are measured, and a new method for calculating the coupling coefficient and the coupled values of the internal quantum efficiency and the internal lumped loss is demonstrated for the MQW device.

Original language	English
Pages (from-to)	4316-4325
Number of pages	10
Journal	Applied Optics
Volume	34
Issue number	21
DOIs	https://doi.org/10.1364/AO.34.004316
Publication status	Published - 1995

Keywords

Collimating lens
Coupling coefficient
External-cavity diode laser

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10.1364/AO.34.004316

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AB - Comparative operating characteristics of external-cavity diode lasers (ECDL’s) with either a channel substrate planar device or a multi-quantum-well (MQW) device are presented. These include the output beam profile, which is significantly altered depending on the collimating lens used (either multielement or graded index), power versus injection-current characteristics, and the optical frequency and the rf spectra. The coherence lengths of the different laser diode–collimating-lens combinations in the ECDL are measured, and a new method for calculating the coupling coefficient and the coupled values of the internal quantum efficiency and the internal lumped loss is demonstrated for the MQW device.

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KW - Coupling coefficient

KW - External-cavity diode laser

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External-cavity diode lasers with different devices and collimating optics

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Keywords

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