Method and apparatus for generating high power laser pulses in t

Coherent light generators – Long wavelength

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

372 10, 372 69, 372 39, 372 20, H01S 330

Patent

active

055838774

ABSTRACT:
Apparatus performs a method of generating one or more output laser pulses in a range of 2 to 6 microns. When a plurality of the output laser pulses are generated, a first output pulse has any selected wavelength within the range and a second output pulse is temporally closely spaced relative to the first output pulse and has a chosen wavelength differing from the selected wavelength. An oscillator laser cavity is provided with a tunable oscillator rod capable of generating initial laser pulses within a range of from 750 to 1000 nm, and a tuning element is coupled to the rod. A flashlamp is operable to pump the rod. For two pulse operation, the flashlamp has a given duration. A Q-switch provides the initial laser pulses upon operation of the tuning element and the flashlamp. A Raman device coupled to the rod shifts the wavelength of such initial laser pulse into the range of from 2 to 6 microns to form the output laser pulse having a wavelength within the range. For multiple pulses, a controller causes the Q-switch to provide first and second ones of the initial laser pulses, spaced by a time interval less than the given duration. Also, a selector coupled to the tuning element is operable within such duration to successively select the wavelength of the first output pulse and the chosen wavelength of the second initial pulse. The Raman device is responsive to each of the initial light pulses to generate radiation at first and second Stokes wavelengths, each of said the output laser pulses being radiation at the second Stokes wavelength.

REFERENCES:
patent: 4151486 (1979-04-01), Itzkan et al.
patent: 4194170 (1980-03-01), Kurnit
patent: 4348599 (1982-09-01), Pradre et al.
patent: 4389617 (1983-06-01), Kurnit
patent: 4394623 (1983-07-01), Kurnit
patent: 4618783 (1986-10-01), Pardere et al.
patent: 4829528 (1989-05-01), Band et al.
patent: 4853543 (1989-03-01), Ozdemir
patent: 5034952 (1991-07-01), Mansfield et al.
patent: 5091778 (1992-02-01), Keeler
patent: 5105434 (1992-04-01), Krupke et al.
patent: 5163061 (1992-11-01), Moberg
patent: 5250810 (1993-10-01), Geiger
patent: 5251221 (1993-10-01), Stultz et al.
patent: 5252060 (1993-10-01), McKinnon et al.
patent: 5257085 (1993-10-01), Ulich et al.
patent: 5260963 (1993-11-01), Baird et al.
patent: 5272717 (1993-12-01), Stultz
patent: 5276696 (1994-01-01), Callender
patent: 5414723 (1995-05-01), Krapchev
Bischel, W. K., et al. Wavelength Dependence of Raman Scattering Cross Sections From 200-600nm., pp. 181-187, Eximers, 1983, Edited by Rhodes, C. K. (No Month).
Frey, R., et al., High-efficiency pulse compression with intracavity Raman oscillators, pp. 437-439, Optics Letters, vol. 8, No. 8 Aug. 1983.
Frey, R., et al., High-Efficiency Pulse Compression with Intracavity Raman Amplifiers, pp. 786-796, IEEE journal of Quantum electronics, vol. QE-20, No. 7 Jul. 1984.
De Rougemont, F., et al., High-efficiency pulse compression with externally pumped intracavity Raman oscillator., pp. 460-462, Optics Letters, vol. 9, No. 10, Oct. 1984.
Bilbe, R. M., et al., Jun. 1990, An Improved Raman Lidar System For the Remote Measurement of Natural gases Released Into The Atmosphere, Measurement Science Technology, 1, No. 6, pp. 495-499.
Hanson, F. et al., Sep. 1993, Gain Measurements and Average Power Capabilities of Cr3+:LiSrAlF6, Optics Letters, 18, No. 17, pp. 1423-1425.
MacPherson, D. C., et al., Jul. 1989, Stimulated Raman Scattering In the Visible With A Multipass Cell, IEEE Journal of Quantum Electronics, 25, No. 7, 1741-1746.
Scott, B. P., et al., May 1990, Efficient Raman Energy Extraction in HD, Applied Optics, 20, No. 29, pp. 2217-2218.
Stalder, M., et al., 1991, Flashlamp Pumped Cr:LiSrAlF6, Applied Physics Letters, 58, (3) 21 Jan. 1991 Jan.
Swanson, R. C., et al., Dec. 1990, Quantum statistics of the Gain-Narrowed Raman Linewidth in H2, American Physical Society; Review A, 42, No. 11, pp. 6774-6783.
Zhang, Q., et al., Jan./1992, Electronically Tuned Diode-Laser-Pumped Cr:liSrAlF6 Laser, Optics Letters, 17, No. 1, pp. 43-45.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for generating high power laser pulses in t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for generating high power laser pulses in t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating high power laser pulses in t will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-430196

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.