Blue-light generating femtosecond wavelength-tunable...

Details Blue-light generating femtosecond wavelength-tunable... Blue-light generating femtosecond wavelength-tunable...

2006-09-12

2006-09-12

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

Parametric oscillator

C359S326000

Reexamination Certificate

active

07106498

ABSTRACT:
The present invention discloses a means of the generation of tunable femtosecond pulses from 380 nm to 465 nm near the degenerate point of a 405-nm pumped type-I BBO non-collinearly phase-matched optical parametric amplifier (NOPA). The tunable UV/blue radiation is obtained from sum frequency generation (SFG) between the OPA output and the residual fundamental beam at 810-nm and cascaded second harmonic generation (SHG) of OPA. With a pumping energy of 75 mJ at 405 nm, the optical conversion efficiency from the pump to the tunable SFG is more than 5% and the efficiency of SHG of the OPA is about 2%.

REFERENCES:
patent: 5333142 (1994-07-01), Scheps
patent: 5408481 (1995-04-01), Scheps
patent: 5710658 (1998-01-01), Jacobson et al.
patent: 5936739 (1999-08-01), Cameron et al.
patent: 6900928 (2005-05-01), Lin et al.
patent: 2004/0228372 (2004-11-01), Vodopyanov et al.
Marshall et al, “Continuously Tunable Diode-Pumped UV-Blue Laser Source”, Optics Letters, vol. 18, No. 10, May 1993, pp. 817-819.
Zimmermann et al, “All Solid State Laser Source For Tunable Blue and Ultraviolet Radiation”, Applied Physics Letters, vol. 66, No. 18, May 1995, pp. 2318-2320.

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