Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2006-09-12
2006-09-12
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S106000, C372S102000, C372S101000, C369S103000, C369S110010
Reexamination Certificate
active
07106771
ABSTRACT:
A semiconductor laser device has a semiconductor laser and a polarizing diffraction grating that is arranged ahead of the semiconductor laser. A reflected light from an optical recording medium is diffracted by the polarizing diffraction grating according to the polarization direction of the reflected light. The reflected light is thereby deviated from the direction toward the semiconductor laser to prevent the reflected light from returning to the semiconductor laser.
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Korean Office Action issued Jul. 29, 2005, directed to corresponding Korean application.
Ariyoshi Akira
Hamaoka Osamu
Shinohara Hisayuki
Flores-Ruiz Delma R.
Harvey Minsun Oh
Morrison & Foerster / LLP
Sharp Kabushiki Kaisha
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