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Low-threshold membrane BH-DFB laser arrays with precisely controlled wavelength over a wide range

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5 Author(s)
Okamoto, T. ; Res. Center for Quantum Effect Electron., Tokyo Inst. of Technol., Japan ; Yamazaki, T. ; Sakamoto, S. ; Tamura, S.
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We report on the low-threshold operation of membrane buried heterostructure distributed feedback laser arrays. 45 devices were fabricated on a wafer covering a wide wavelength range of 75 nm. The lowest threshold pump power as low as 0.64 mW along with the submode suppression-ratio of over 30 dB at two times the threshold were successfully obtained at room-temperature continuous-wave condition.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 5 )