Output coupler for external cavity laser

Details Output coupler for external cavity laser Output coupler for external cavity laser

2007-11-26

2009-12-29

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular beam control device

Nonlinear device

C372S022000, C372S102000

Reexamination Certificate

active

07639718

ABSTRACT:
The disclosed invention is an external cavity laser with a volume holographic VHG output coupler. The facet of the VHG is coated with a very high reflectivity coating (HR close to 100%) for the purpose of reflecting the second harmonic (SH) light generated intra-cavity. The HR coating for the SH light has also an anti-reflection (AR) coating at the fundamental wavelength. The reflected second harmonic (SH) light is either reflected directly out of the cavity by the VHG or back to the cavity towards the optics that deflect the SH light out of the cavity.

REFERENCES:
patent: 5517525 (1996-05-01), Endo et al.
patent: 5691989 (1997-11-01), Rakuljic et al.
patent: 7248618 (2007-07-01), Volodin et al.
patent: 7359420 (2008-04-01), Shchegrov et al.
Joseph W. Goodman, Introduction to Fourier Optics, 1968, pp. 198-224.
Herwig Kogelnik, Coupled Wave Theory for Thick Hologram Gratings, The Bell System Tech. Journal, Nov. 1969, vol. 48, No. 9, pp. 2909-2947.

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