Control of optical mode distribution through etched microstructures for improved broad area laser performance

P. Crump; P. Leisher; T. Matson; V. Anderson; D. Schulte; J. Bell; J. Farmer; M. Devito; R. Martinsen; Y. K. Kim; K. D. Choquette; G. Erbert; G. Tränkle

doi:10.1063/1.2906030

Control of optical mode distribution through etched microstructures for improved broad area laser performance

P. Crump, P. Leisher, T. Matson, V. Anderson, D. Schulte, J. Bell, J. Farmer, M. Devito, R. Martinsen, Y. K. Kim, K. D. Choquette, G. Erbert, G. Tränkle

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

Abstract

Etching microstructures into broad area diode lasers is found to lead to more uniform near field and increased power conversion efficiency, arising from increased slope. Self-consistent device simulation indicates that this improvement is due to an increase in the effective internal injection efficiency above threshold-the nonuniform near field leads to regions of inefficient clamping of the carrier density in the laser stripe. Measurements of spontaneous emission through the substrate confirm the predicted carrier profile. Both experiment and theory show that improved overlap between carrier and power distributions correlates with improved slope.

Original language	English (US)
Article number	131113
Journal	Applied Physics Letters
Volume	92
Issue number	13
DOIs	https://doi.org/10.1063/1.2906030
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2906030

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abstract = "Etching microstructures into broad area diode lasers is found to lead to more uniform near field and increased power conversion efficiency, arising from increased slope. Self-consistent device simulation indicates that this improvement is due to an increase in the effective internal injection efficiency above threshold-the nonuniform near field leads to regions of inefficient clamping of the carrier density in the laser stripe. Measurements of spontaneous emission through the substrate confirm the predicted carrier profile. Both experiment and theory show that improved overlap between carrier and power distributions correlates with improved slope.",

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language = "English (US)",

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T1 - Control of optical mode distribution through etched microstructures for improved broad area laser performance

AU - Crump, P.

AU - Leisher, P.

AU - Matson, T.

AU - Anderson, V.

AU - Schulte, D.

AU - Bell, J.

AU - Farmer, J.

AU - Devito, M.

AU - Martinsen, R.

AU - Kim, Y. K.

AU - Choquette, K. D.

AU - Erbert, G.

AU - Tränkle, G.

N1 - Funding Information: Portions of this work were supported by DARPA under the SHED’s Contract No. MDA972-03-C-0101.

PY - 2008

Y1 - 2008

N2 - Etching microstructures into broad area diode lasers is found to lead to more uniform near field and increased power conversion efficiency, arising from increased slope. Self-consistent device simulation indicates that this improvement is due to an increase in the effective internal injection efficiency above threshold-the nonuniform near field leads to regions of inefficient clamping of the carrier density in the laser stripe. Measurements of spontaneous emission through the substrate confirm the predicted carrier profile. Both experiment and theory show that improved overlap between carrier and power distributions correlates with improved slope.

AB - Etching microstructures into broad area diode lasers is found to lead to more uniform near field and increased power conversion efficiency, arising from increased slope. Self-consistent device simulation indicates that this improvement is due to an increase in the effective internal injection efficiency above threshold-the nonuniform near field leads to regions of inefficient clamping of the carrier density in the laser stripe. Measurements of spontaneous emission through the substrate confirm the predicted carrier profile. Both experiment and theory show that improved overlap between carrier and power distributions correlates with improved slope.

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Control of optical mode distribution through etched microstructures for improved broad area laser performance

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