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

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

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...

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Veröffentlicht in:IEEE photonics technology letters 2005-12, Vol.17 (12), p.2676-2678
Hauptverfasser: Shinwook Lee, Kyungbum Kim, Vaissie, L., Smolski, O.V., Johnson, E.G., Delfyett, P.J.
Format: Artikel
Sprache:eng
Schlagworte:
Autocorrelation
Bandwidth
Grating-coupled surface-emitting semiconductor laser
Gratings
Holes
Laser mode locking
mode-locking
Optical feedback
Optical filters
Optical pulse generation
Optical signal processing
Optical surface waves
Photonics
Picosecond pulses
Pulse duration
Pulse generation
saturable absorber
Semiconductor lasers
Spectra
Surface emitting lasers
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Beschreibung
Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.859395