Laser module allowing direct light modulation and laser...

Details Laser module allowing direct light modulation and laser... Laser module allowing direct light modulation and laser...

2007-04-17

2008-12-30

Font, Frank G (Department: 2883)

Optical waveguides

Directional optical modulation within an optical waveguide

Electro-optic

C385S093000

Reexamination Certificate

active

07471854

ABSTRACT:
Provided are a laser module allowing direct light modulation and a laser display employing the laser module. The laser module may include a semiconductor chip, a Volume Bragg Grating (VBG), a pump laser and a non-linear optical element. The semiconductor chip includes an active layer generating light of primary wavelength and a reflective layer providing the generated light to a cavity and reflecting the light within the cavity. The VBG may output light repeatedly reflected between the reflective layer and the VBG. The non-linear optical element disposed outside a cavity between the semiconductor chip and the VBG may convert the light of a first wavelength emitted from the active layer into light of a second wavelength different from the first wavelength. The laser module having the above-mentioned construction uses an external cavity laser and a non-linear optical element to achieve direct light modulation.

REFERENCES:
patent: 7322704 (2008-01-01), Shchegrov
patent: 2006/0280219 (2006-12-01), Shchegrov
patent: 2007/0147444 (2007-06-01), Kim

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