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- W2042612589 abstract "Summary form only given. Compact blue/violet light sources with high-power, low-noise and diffraction-limited focusing beam are required to realize high-density optical disk systems. A second-harmonic generation (SHG) laser has advantages principally in the noise and beam quality compared with another candidate, the GaN laser. The quasi-phasematched (QPM) SHG device is usually fabricated by forming a proton-exchanged waveguide on a periodically domain-inverted MgO:LiNbO/sub 3/ substrate. However, the proton-exchanged waveguide presents disadvantages such as a graded index profile, asymmetric modes and degraded nonlinear property. Therefore, a new waveguide technology to replace the proton-exchange method is desired to realize efficient and high-power SHG lasers. We focus on the machining technique for processing three-dimensional waveguides which can draw out the original performance of nonlinear crystals. We propose a new ridge-type waveguide QPM-SHG device fabricated by ultraprecision, machining, and demonstrate high-power blue/violet light generation of 100 mW using the Ti:Al/sub 2/O/sub 3/ laser as a fundamental source and 14 mW output by frequency doubling of the laser diode (LD)." @default.
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- W2042612589 date "2001-01-01" @default.
- W2042612589 modified "2023-09-27" @default.
- W2042612589 title "High-power blue/violet QPM-SHG laser using a new ridge-type waveguide" @default.
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- W2042612589 doi "https://doi.org/10.1109/cleo.2001.947617" @default.
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