Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Makoto Kato"'
Autor:
Toshifumi Yokoyama, Makoto Kato, Kenji Narumi, Yasuo Kitaoka, Kazuhisa Yamamoto, Kiminori Mizuuchi
Publikováno v:
The Review of Laser Engineering. 26:256-260
A high power SHG blue laser with direct modulation capability at high frequency has been demonstrated usinga tunable distributed Bragg reflector (DBR) laser diode and a waveguide-type quasi-phase-matched secondharmonic generation (QPM-SHG) device in
Publikováno v:
Optics letters. 20(3)
We report highly efficient blue-light generation by frequency doubling of a high-frequency superimposed laser diode, stabilized by a grating feedback technique, in a periodically domain-inverted LiTaO(3) waveguide. To increase second-harmonic generat
Publikováno v:
Applied Physics Letters. 70:1201-1203
Frequency doubling of a 684 nm laser diode in a first-order periodically poled LiTaO3 is presented. Controlling the side growth of the domain inverted region during high-voltage pulse application, a uniform nonlinear grating with a period of 1.7 μm
Autor:
Seiji Nishino, Kazuhisa Yamamoto, Kiminori Mizuuchi, Yasuo Kitaoka, Makoto Kato, Hidehiko Wada
Publikováno v:
Optical Review. 3:481-483
A half-wave thin film was formed on the facet of a proton-exchanged waveguide by the oblique deposition of Ta2O5. Planar-type butt coupling of the waveguide on the z-cut LiTaO3 substrate to the AlGaAs laser diode in transverse electric mode oscillati
Publikováno v:
Applied Physics Letters. 62:2599-2601
We report high power and stable blue‐light generation by frequency doubling a laser diode, stabilized by a grating feedback technique, in a periodically domain‐inverted LiTaO3 waveguide. Due to the deep domain‐inverted regions and strong wavegu
Publikováno v:
SPIE Proceedings.
Recent advances in optical pickup heads using holographic optical elements (HOEs) are reviewed, with emphasis on a practical servo-signal detection system that can realize compact integration of HOE, laser diode, photodetectors, and objective lens. T
Publikováno v:
Optics Letters. 21:1972
Efficient intracavity second-harmonic generation (SHG) based on a bulk-type quasi-phase-matched (QPM) SHG device in a LiTaO(3) crystal is demonstrated. The periodically domain-inverted regions were fabricated by a high-voltage application technique.
Publikováno v:
Applied Optics. 34:5361
Grating feedback optics is shown to contribute to narrowing the spectral bandwidth of a multilongitudinal-mode laser diode to less than 0.2 nm and tuning the lasing wavelength to the peak absorption wavelength of Nd:YVO(4). A continuous green light o
Publikováno v:
Optics Letters. 19:810
We demonstrate that intracavity frequency doubling of Nd:YVO(4) pumped by a laser diode can be stabilized by use of a wavelength-locking system of the laser diode with a transmission-type optical filter in a confocal optical configuration. The wavele
Publikováno v:
Applied Optics. 29:2522
A focusing grating mirror (FGM), which is a new computer generated holographic grating with functions of focusing lens and diffraction grating mirror, is proposed and fabricated, we believe, for the first time. A high speed and accurate electron beam