Title :
Picosecond pulse generation using a saturable absorber section of grating-coupled surface-emitting laser
Author :
Lee, Shinwook ; Kim, Kyungbum ; Vaissie, Laurent ; Smolski, Oleg V. ; Johnson, Eric G. ; Delfyett, Peter J., Jr.
Author_Institution :
Center for Res. & Educ. in Opt. & Lasers, Univ. of Central Florida, Orlando, FL, USA
Abstract :
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.
Keywords :
diffraction gratings; laser cavity resonators; laser mode locking; optical couplers; optical pulse generation; optical saturable absorption; semiconductor lasers; surface emitting lasers; 0.26 W; 3.4 ps; 8.8 ps; FWHM autocorrelation; external cavity; grating-coupled surface-emitting laser; hybrid mode locking; picosecond pulse generation; saturable absorber; Gratings; Laser mode locking; Optical feedback; Optical filters; Optical pulse generation; Optical signal processing; Optical surface waves; Pulse generation; Semiconductor lasers; Surface emitting lasers; Grating-coupled surface-emitting semiconductor laser; mode-locking; saturable absorber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.859395
