Technique for intracavity sum frequency generation

Details Technique for intracavity sum frequency generation Technique for intracavity sum frequency generation

1993-08-12

1994-07-26

Lee, John D.

Coherent light generators

Particular beam control device

Nonlinear device

359328, 372 20, 372 23, H01S 3109

Patent

active

053331427

ABSTRACT:
A means for intracavity sum frequency generation is described in which a laser operates simultaneously at two wavelengths. The laser resonator further contains a sum frequency generating nonlinear crystal which is oriented for efficient sum frequency generation of the two fundamental wavelengths. The optical alignment of the resonator provides a region where both fundamental wavelengths are overlapped and are focused. The nonlinear sum frequency generating crystal is placed near this focus in the region where both wavelengths are spatially superimposed, producing the sum frequency of the two wavelengths. Line narrowing of the individual two fundamental wavelengths produces a line narrowed sum frequency generated output. Mirror coatings on all reflective elements are highly reflective for both fundamental wavelengths to produce a high intracavity fluence at both of these frequencies. Sum frequency generation at 459 nm is demonstrated in a non-critically phase matched Type II KTP crystal by operating a Ti:sapphire laser simultaneously at 808 nm and 1.064.mu.. In order to achieve simultaneous operation at both wavelengths a 1.064.mu. signal may be injected into the resonator from an external source, such as a Nd:YAG laser. A doubled Nd:YAG laser may be used to optically excite the Ti:sapphire laser while simultaneously injecting 1.064.mu. radiation into the laser cavity.

REFERENCES:
patent: 3603685 (1971-09-01), Heflinger et al.
patent: 3975693 (1976-08-01), Barry et al.
patent: 4637026 (1987-01-01), Liu
patent: 4639923 (1987-01-01), Tang et al.
patent: 4791631 (1988-12-01), Baumert et al.
patent: 4879723 (1989-11-01), Dixon et al.
patent: 5025446 (1991-06-01), Kuizenga
patent: 5038352 (1991-08-01), Lenth et al.
patent: 5070505 (1991-12-01), Dixon
patent: 5095491 (1992-03-01), Kozlovsky et al.
G. D. Boyd and D. A. Kleinman, Journal of Applied Physics, vol. 39, No. 8, p. 3597 to 3639 1968 (Jul).
K. Kato, IEEE J. Quantum Electronics, vol. QE-24, No. 1, pp. 3-4, Jan. 1988.
J.-C. Baumert, F. M. Schellenberg, W. Lenth, W. P. Risk and G. C. Bjorklund, Appl. Phys. Lett., vol. 51, No. 26, pp. 2192-2194, Dec. 1987.
W. P. Risk, J.-C. Baumert, G. C. Bjorklund, F. M. Schellenberg and W. Lenth, Appl. Phys. Lett., vol. 52, No. 2, pp. 85-87, Jan. 1988.
D. W. Anthon and G. J. Dixon, M. G. Ressl, and T. J. Pier, Proceedings of the SPIE, vol. 898, pp. 68-69, 1988.
W. P. Risk and W. Lenth, Appl. Phys. Lett., vol. 54, No. 9, pp. 789-791, Feb. 1989.
P. N. Kean and G. J. Dixon, Optics Letters, vol. 17, No. 2, pp. 127-129, Jan. 1992.
W. P. Risk and W. J. Kozlovsky, Optics Letters, vol. 17, No. 10, pp. 707-709, May 1992.
H. S. Pilloff, Appl. Phys. Lett. vol. 21, No. 8, pp. 339-340, Oct. 1972.
C. Wu and J. R. Lombardi, Optics Communications, vol. 7, No. 3, pp. 233-236, Mar. 1973.
H. Lotem and R. T. Lynch, Jr., Appl. Phys. Lett., vol. 27, No. 6, pp. 344-346, Sep. 1975.
G. S. Kruglik, P. N. Nazarenko, N. V. Okldnikov, G. A. Skripko and A. A. Stavrov, Atmospheric Optics, vol. 2, No. 8, pp. 729-734, Aug. 1989.
S. G. Bartoshevich, I. V. Mikhnyuk, G. A. Skripko and I. G. Tarazevich, IEEE. J. Quantum Electronics, vol. 27, No. 10, pp. 2234-2237, Oct. 1991.
Richard Scheps and J. F. Myers, IEEE Photonics Technology Letters, vol. 4, No. 1, pp. 1-3, Jan. 1992.
S. Singh, in Handbook of Laser Science and Technology, M. J. Weber, Ed., CRC Press, Boca Raton, Fla., vol. 3, pp. 3-21, 1986.

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