Optical resonant frequency converter

Details Optical resonant frequency converter Optical resonant frequency converter

2006-04-11

2006-04-11

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

C372S022000

Reexamination Certificate

active

07027209

ABSTRACT:
The invention concerns an optical resonant frequency converter comprising two mirrors and a non-linear crystal in a ring resonator arrangement for converting laser radiation into frequency-doubled radiation. Because of the refractive effect of the prism-shaped, non-linear crystal two mirrors are sufficient to form a ring resonator with a total of three optical elements. A suitable choice of the orientation of the crystal axes in relation to the laser beam direction reduces scatter in the crystal. In one embodiment the entry surface of the crystal is at the Brewster angle while the exit surface is perpendicular to the beam and has an antireflection coating. In another embodiment the converted beam is coupled out through a polarisation beam splitter layer on one of the crystal surfaces. In a further embodiment the crystal surfaces are cylindrically curved. That produces an elliptical beam profile in the crystal, which reduces the walk-off effect.

REFERENCES:
patent: 5027361 (1991-06-01), Kozlovsky et al.
patent: 5943350 (1999-08-01), Shichijyo
patent: 6069903 (2000-05-01), Zanger et al.
patent: 6317449 (2001-11-01), Zanger et al.
patent: 6424453 (2002-07-01), Zanger et al.
patent: 198 32 647 (2000-03-01), None
patent: 199 23 005 (2000-11-01), None
patent: 04347824 (1992-03-01), None
Ashkin, et al, “Resonant Optical Second Harmonic Generation and Mixing,” Journal of Quantum Electronics, Jun. 1966 ed., vol. 2 (No. 6), p. 109-124, (Jun. 10, 1966).
Brieger, et al, “Enhancement of Single Frequency SHG in a Passive Ring Resonator,” Optics Communications, vol. 38 (No. 5,6), p. 423-426, (Sep. 1, 1981).
G.D. Boyd, “Parametic Inateration of Focused Gaussian Light Beam,” Journal of Applied Physics, vol. 39 (No. 8), p. 3597-3609, (Jul. 10, 1968).
Augustov, et al, “Photorefraction and Anisotropic Light Scattering in LiNbO3-Fe Crystals,” Applied Physics A, p. 169-172, (Nov. 10, 1982).
K. Kato, “Second-Harmonic Generation to 2024 Å in β-BaB2O4,” Journal of Quantum Electronics, vol. 22 (No. 7), (Jul. 10, 1986).
Brozek et al, “Highly efficient cw frequency doubling of 854 nm GaAlAs diode laser in an external ring cavity,” Optics Communications, Elsevier Science BV, p. 141-46, (Jan. 15, 1998).

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