Coherent light generators – Particular beam control device – Nonlinear device
Patent
1997-01-24
1998-08-11
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Nonlinear device
372 39, 372 93, 372 3, H01S 310
Patent
active
057937818
ABSTRACT:
This invention teaches an optical source (10) for performing photomedicine. The optical source includes a Nd:YLF laser (12) having an output providing light having a wavelength of 1.053 micrometers; a frequency doubler (13) that is optically coupled to the laser output for converting a portion of the light to frequency doubled light, the frequency doubler having an output providing frequency doubled light having a wavelength of 526.5 nm; and, coupled to the output of the frequency doubler, a unit (14) for shifting the frequency doubled light to light having a wavelength of about 630 nm. In a presently preferred embodiment of this invention the shifting unit includes a device for performing stimulated Raman scattering of the frequency doubled light for creating the third Stokes line at 630.1 nm. The device includes a crystal comprised of a R.sub.x (MO.sub.3).sub.y compound and means for establishing a multi-pass or resonant cavity optical configuration through the crystal. By example, the crystal is comprised of one of Ba(NO.sub.3).sub.2, KNO.sub.3, Ca(O.sub.3), Pb(NO.sub.3).sub.2, and NaNO.sub.3.
REFERENCES:
patent: 5448582 (1995-09-01), Lawanmdy
"Solid-state barium nitrate Raman laser in the visible region", Chuan He, Thomas H. Chyba, Optics Communications 135 (1997), pp. 273-378.
"Stimulated Raman scattering of picosecond pulses in barium nitrate crystals", Petr G. Zverev et al., Optics Communications 97 (1993), 59-64.
"Stimulated Reman scattering of the beam from a copper-vapor laser in a barium nitrate crystal", S.A. Vitsinskii et al., Quantum Electron, 23 (12), Dec. 1993, 1001-1004.
"Generation of radiation in a resonator under conditions of stimulated Raman scattering in Ba(NO.sub.3).sub.2, NaNO.sub.3, and CaCO.sub.3 crystals", S.N. Karpukhin et al., Sov. J. Quantum Electron., 16(8), Aug. 1986, 1027-1030.
"Conversion of tunable radiation from a laser utilizing an LiF crystal containing F.sub.2 color centers by stimulated Raman scattering in Ba(No.sub.3).sub.2 and KGd(WO.sub.4).sub.2 crystals", T.T. Basiev et al., Sov. J. Quantum Electron., 17(12), Dec. 1987, 1560-1561.
Jr. Leon Scott
Spectra Science Corporation
LandOfFree
Solid state source for generating intense light for photodynamic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid state source for generating intense light for photodynamic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid state source for generating intense light for photodynamic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-397319