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Half-symmetric cavity tunable microelectromechanical VCSEL with single spatial mode

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6 Author(s)
Tayebati, P. ; CoreTek Inc., Burlington, MA, USA ; Peidong Wang ; Vakhshoori, D. ; Chih-Cheng Lu
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A new class of microelectromechanically tunable vertical-cavity surface-emitting lasers with a half-symmetric cavity structure is described. The cavity is realized by inducing a curvature (R/spl sim/320 μm) in the top movable dielectric mirror. The microcavity forces lasing oscillations in a single fundamental spatial mode of approximately 6 μm despite the 20 μm electrical aperture of the device. The device wavelength was tunable from 863 to 833 nm under a 13-V voltage swing. The device operates in a single fundamental mode with sidemode supression ratio of >20 dB throughout the tuning range.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 12 )