Open AccessBlue light generated by intra-cavity frequency doubling of an edge-emitting diode laser with a periodically poled LiNbO_3 crystal
Author(s) -
Kang Li,
Ayan Yao,
Nigel Copner,
C.B.E. Gawith,
Ian G. Knight,
H. Pfeiffer,
Bob Musk
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.022073
Subject(s) - optics , materials science , laser , diode , second harmonic generation , crystal (programming language) , laser diode , semiconductor laser theory , optoelectronics , common emitter , physics , computer science , programming language
We demonstrate for the first time to our knowledge intra-cavity frequency doubling (ICFD) of an edge-emitter diode laser using a 10 mm-long 5.0 microm periodically poled LiNbO(3) (PPLN) crystal. An optical output power of 33 mW second harmonic blue light at 490.5 nm is generated at 1.0 A injection current, equivalent to an overall wall-plug efficiency of 1.8%. The measured M(2) values of blue beam are 1.7 and 2.4 along the fast and slow axis.