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Picosecond pulse generation using a saturable absorber section of grating-coupled surface-emitting laser

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6 Author(s)
Shinwook Lee ; Center for Res. & Educ. in Opt. & Lasers, Univ. of Central Florida, Orlando, FL, USA ; Kyungbum Kim ; Vaissie, L. ; Smolski, O.V.
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We report on a passively and hybridly mode-locked grating-coupled surface-emitting laser (GCSEL) using the unpumped section of the GCSEL as a saturable absorber. We obtain 8.8-ps full-width at half-maximum (FWHM) autocorrelation pulses in passive mode-locked operation and an FWHM pulse duration of 3.4 ps in hybrid mode-locked operation, which are the shortest pulses from a GCSEL external cavity. With hybrid mode-locking, a peak power of 0.26 W and a spectral bandwidth of 0.6 nm are obtained. These results demonstrate the potential of multisegment GCSELs in ultrashort pulse generation.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 12 )

Date of Publication:

Dec. 2005

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