Title :
Generation of ultraviolet picosecond pulses by frequency-doubling of laser diode in proton-exchanged MgO:LiNbO/sub 3/ waveguide
Author :
Tohmon, Genji ; Ohya, Jun ; Yamamoto, Kazuhisa ; Taniuchi, Tetsuo
Author_Institution :
Matsushita Electrical Ind. Co. Ltd., Osaka, Japan
Abstract :
Ultraviolet picosecond pulses were generated by frequency doubling a AlGaAs-GaAs laser diode in a proton-exchanged waveguide fabricated in MgO:LiNbO/sub 3/. The Cerenkov radiation scheme was used to phase-match the infrared pulse from a gain-switched laser diode, which operates in multilongitudinal modes. Pulses with a peak power of 1.35 mW and 19.3-ps width were obtained at 390 nm. This is a unique method for generating short ultraviolet pulses with laser diodes in a simple configuration.<>
Keywords :
high-speed optical techniques; ion exchange; laser beams; laser modes; optical harmonic generation; optical waveguides; semiconductor junction lasers; 1.35 mW; 19.3 ps; 390 nm; AlGaAs-GaAs laser diode; Cerenkov radiation scheme; IR pulses; LiNbO/sub 3/:MgO; UV picosecond pulses; frequency-doubling; gain-switched laser diode; laser diode; multilongitudinal modes; phase-match; proton-exchanged waveguide; Diode lasers; Frequency conversion; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical modulation; Optical pulse generation; Optical pulses; Optical waveguides; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
