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Continuous-wave mid-infrared VCSELs

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9 Author(s)
Bewley, W.W. ; Naval Res. Lab., Washington, DC, USA ; Felix, C.L. ; Vurgaftman, I. ; Aifer, E.H.
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We report the continuous-wave operation of an optically pumped mid-infrared (mid-IR) vertical-cavity surface-emitting laser (VCSEL). The active region consisting of type-II antimonide quantum wells with a "W" configuration occupies a cavity formed by a semiconductor bottom mirror and dielectric top mirror. The emission wavelength of 2.9 /spl mu/m is nearly independent of temperature (d/spl lambda//dT/spl ap/0.09 nm/K) compared to type-II edge-emitters and the multimode linewidth is narrow (2.9 nm). At T=78 K, the threshold pump intensity is /spl ap/940 W/cm/sup 2/, the peak output power from a 50-/spl mu/m spot is 45 mW, and the differential power conversion efficiency is 4.5%. Lasing is observed up to T=160 K.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 5 )

Date of Publication:

May 1998

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