Theory of grating-confined broad-area lasers

Robert J. Lang; Ken Dzurko; Amos A. Hardy; Scott Demars; Alexander Schoenfelder; David F. Welch

doi:10.1109/3.726614

Theory of grating-confined broad-area lasers

Robert J. Lang^*, Ken Dzurko, Amos A. Hardy, Scott Demars, Alexander Schoenfelder, David F. Welch

^*Corresponding author for this work

Department of Electrical Engineering - Physical Eng.

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

109 Scopus citations

Abstract

Angled-distributed-feedback semiconductor lasers have demonstrated 1-W diffraction-limited collimated output from a broad-area aperture. We present the first theoretical analysis of the modes of these devices, explaining their principle of operation and the reasons for their high spatial mode quality. A transfer matrix analysis is presented that can describe the general class of grating-guided waveguides with either finite and/or infinite grating boundaries. Lateral grating-confined broad-area waveguides are shown to have extremely high spatial mode selectivity. The theory is applied to describe the new angled-grating distributed feedback laser (α-DFB), predicting a broad near-Gaussian near field and a collimated diffraction-limited far field, in good agreement with experiment.

Original language	English
Pages (from-to)	2196-2209
Number of pages	14
Journal	IEEE Journal of Quantum Electronics
Volume	34
Issue number	11
DOIs	https://doi.org/10.1109/3.726614
State	Published - Nov 1998

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abstract = "Angled-distributed-feedback semiconductor lasers have demonstrated 1-W diffraction-limited collimated output from a broad-area aperture. We present the first theoretical analysis of the modes of these devices, explaining their principle of operation and the reasons for their high spatial mode quality. A transfer matrix analysis is presented that can describe the general class of grating-guided waveguides with either finite and/or infinite grating boundaries. Lateral grating-confined broad-area waveguides are shown to have extremely high spatial mode selectivity. The theory is applied to describe the new angled-grating distributed feedback laser (α-DFB), predicting a broad near-Gaussian near field and a collimated diffraction-limited far field, in good agreement with experiment.",

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AU - Lang, Robert J.

AU - Dzurko, Ken

AU - Hardy, Amos A.

AU - Demars, Scott

AU - Schoenfelder, Alexander

AU - Welch, David F.

PY - 1998/11

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N2 - Angled-distributed-feedback semiconductor lasers have demonstrated 1-W diffraction-limited collimated output from a broad-area aperture. We present the first theoretical analysis of the modes of these devices, explaining their principle of operation and the reasons for their high spatial mode quality. A transfer matrix analysis is presented that can describe the general class of grating-guided waveguides with either finite and/or infinite grating boundaries. Lateral grating-confined broad-area waveguides are shown to have extremely high spatial mode selectivity. The theory is applied to describe the new angled-grating distributed feedback laser (α-DFB), predicting a broad near-Gaussian near field and a collimated diffraction-limited far field, in good agreement with experiment.

AB - Angled-distributed-feedback semiconductor lasers have demonstrated 1-W diffraction-limited collimated output from a broad-area aperture. We present the first theoretical analysis of the modes of these devices, explaining their principle of operation and the reasons for their high spatial mode quality. A transfer matrix analysis is presented that can describe the general class of grating-guided waveguides with either finite and/or infinite grating boundaries. Lateral grating-confined broad-area waveguides are shown to have extremely high spatial mode selectivity. The theory is applied to describe the new angled-grating distributed feedback laser (α-DFB), predicting a broad near-Gaussian near field and a collimated diffraction-limited far field, in good agreement with experiment.

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Theory of grating-confined broad-area lasers

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