Single-mode vertical cavity surface emitting laser by graded-index lens spatial filtering

Barry J. Koch; James R. Leger; Anand Gopinath; Zhong Wang; Robert A. Morgan

doi:10.1063/1.118873

Single-mode vertical cavity surface emitting laser by graded-index lens spatial filtering

Barry J. Koch, James R. Leger, Anand Gopinath, Zhong Wang, Robert A. Morgan

Electrical and Computer Engineering

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Abstract

4.5 mW of power in a single spatial mode has been obtained from a vertical cavity surface emitting laser (VCSEL) in an external cavity setup, using a graded index (GRIN) lens with a spatial filtering high reflecting aperture deposited on its endface. The spatial filter on the GRIN lens endface forces a larger single transverse mode in the VCSEL than is obtained without it. A brightness of 5.1 × 10⁵ W/cm² str is demonstrated, which is 91% of the maximum achievable.

Original language	English (US)
Pages (from-to)	2359-2361
Number of pages	3
Journal	Applied Physics Letters
Volume	70
Issue number	18
DOIs	https://doi.org/10.1063/1.118873
State	Published - May 5 1997

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abstract = "4.5 mW of power in a single spatial mode has been obtained from a vertical cavity surface emitting laser (VCSEL) in an external cavity setup, using a graded index (GRIN) lens with a spatial filtering high reflecting aperture deposited on its endface. The spatial filter on the GRIN lens endface forces a larger single transverse mode in the VCSEL than is obtained without it. A brightness of 5.1 × 105 W/cm2 str is demonstrated, which is 91% of the maximum achievable.",

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AU - Koch, Barry J.

AU - Leger, James R.

AU - Gopinath, Anand

AU - Wang, Zhong

AU - Morgan, Robert A.

PY - 1997/5/5

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N2 - 4.5 mW of power in a single spatial mode has been obtained from a vertical cavity surface emitting laser (VCSEL) in an external cavity setup, using a graded index (GRIN) lens with a spatial filtering high reflecting aperture deposited on its endface. The spatial filter on the GRIN lens endface forces a larger single transverse mode in the VCSEL than is obtained without it. A brightness of 5.1 × 105 W/cm2 str is demonstrated, which is 91% of the maximum achievable.

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Single-mode vertical cavity surface emitting laser by graded-index lens spatial filtering

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