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Generation of 425‐nm light by waveguide frequency doubling of a GaAlAs laser diode in an extended‐cavity configuration

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6 Author(s)
Risk, W.P. ; IBM Research Division, Almaden Research Center, 650 Harry Rd., MS K69/803 San Jose, California 95120 ; Kozlovsky, W.J. ; Lau, S.D. ; Bona, G.L.
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A blue output power of 1.2 mW at 425 nm was generated using a periodically poled KTP waveguide for frequency doubling of a grating tuned, extended‐cavity laser containing an antireflection‐coated GaAlAs SQW‐GRINSCH laser diode as the gain element. A normalized conversion efficiency of 127%/W cm2 was achieved in the extended‐cavity configuration.

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Applied Physics Letters  (Volume:63 ,  Issue: 23 )