Abstract

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 μm periodically poled LiNbO₃ (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 M² values of blue beam are 1.7 and 2.4 along the fast and slow axis.

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History
Original Manuscript: July 9, 2009
Manuscript Accepted: October 8, 2009
Revised Manuscript: October 8, 2009
Published: November 18, 2009

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Author Affiliations

Hans-Ulrich Pfeiffer

Bookham (Switzerland) AG, CH-8045, Zürich, Switzerland

Ian G Knight

Bookham Technology plc, Caswell, NN12 8EQ, UK

C. B. E. Gawith

Covesion Ltd., Romsey, SO51 9AQ, UK

Kang Li, Aiyun Yao, N. J. Copner

Faculty of Advanced Technology, University of Glamorgan, Pontypridd, CF37 1DL, UK

Bob Musk

Gooch & Housego, Torquay, TQ2 7QL, UK

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