Coherent light generators – Particular beam control device – Nonlinear device
Reexamination Certificate
2005-03-15
2008-09-16
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular beam control device
Nonlinear device
C372S022000
Reexamination Certificate
active
07426223
ABSTRACT:
It is easy to increase output with a wide stripe laser, but the lateral mode is a multimode, and the coupling efficiency is low with a single-mode fiber or a single-mode waveguide, creating problems in terms of increasing output. To solve these problems, the light emitted from a wide stripe semiconductor laser is passed through a mode converter and a wavelength selecting filter, then fed back to the active layer of the semiconductor laser, which fixes the oscillation mode of the semiconductor laser to single mode.
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Matsushita Electric - Industrial Co., Ltd.
Nguyen Dung T
Wenderoth , Lind & Ponack, L.L.P.
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