Coherent light generators – Particular beam control device – Tuning
Patent
1994-09-01
1996-06-25
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Tuning
372 54, 372 92, 372 98, 372 99, H01S 310
Patent
active
055307116
ABSTRACT:
A method and apparatus for producing stimulated emission from a laser gain element containing an organic dye are described in which optical pumping is produced by visible laser diodes. Low threshold pump power and high optical conversion efficiency are achieved by producing a laser resonator mode waist at or near the laser gain element and spatially superimposing a pump mode waist at or near the laser resonator mode waist. Using low power visible AlGaInP laser diodes and the dyes rhodamine 700, oxazine 750, DOTCI or oxazine 1 in the laser gain element, incident pump threshold powers as low as 5.4 mW, optical conversion efficiencies of 49% and tunable emission between 700 nm and 800 nm were achieved. This laser was scaled to higher cw output power by using a DCM-based pump dye laser. In a preferred embodiment the laser resonator has two reflective elements in a nearly hemispherical configuration. Angular multiplexing of laser diodes to scale to higher laser diode pump power is described. Short pulse, cw or long pulse dye laser operation is possible for the dye laser apparatus described. In addition, high modulation rate dye laser operation pumped by high modulation rate laser diodes is described.
REFERENCES:
patent: 3735280 (1973-05-01), Johnston, Jr.
patent: 3890578 (1975-06-01), Wang
patent: 3913033 (1975-10-01), Tuccio et al.
patent: 4227159 (1980-10-01), Barrett et al.
patent: 4627068 (1986-12-01), Johnson et al.
patent: 4932031 (1990-06-01), Alfano et al.
patent: 5090019 (1992-02-01), Scheps
patent: 5097477 (1992-03-01), Scheps
patent: 5119394 (1992-06-01), Scheps
patent: 5121402 (1992-06-01), Scheps
patent: 5182759 (1993-01-01), Anthon et al.
patent: 5200972 (1993-04-01), Scheps
patent: 5218610 (1993-06-01), Dixon
patent: 5249189 (1996-09-01), Schaps
patent: 5285467 (1994-02-01), Scheps
patent: 5307358 (1994-04-01), Scheps
Text, Cover page for "Dye Laser Principles" with Applications, F. J. Duarte No Date Available).
"The Measurement Of Internal Losses In 4-Level Lasers", Physics Letters, vol. 20, No. 3, 15 Feb. 1966.
"Low-Threshold Dye Laser Pumped by Visible Laser Diodes", Richard Scheps, IEEE Photonic Technology Letters, vol. 5, No. 10, Oct. 1993.
"Continuous Wave Visible Diode-Pumped Dye Laser", D. P. Benfey et al., Laser Technology Associates, Inc., 204/SPIE vol. 2115, Visible and UV Lasers (No Date Available).
"Dye Lasers Pumped by Radiation From High-Power Semiconductor Lasers", O. V. Bogdankevich, 1987 American Institute of Physics (No Date Available).
"Operation of An Organic Dye Solution Laser", Applied Physics Letters, vol. 17, No. 5, 15 Sep. 1970.
"Stimulated Emission Observed from an Organic Dye, Chloro-aluminum Phthalocyanine", IBM Journal, Mar. 1966.
Fendelman Harvey
Jr. Leon Scott
Keough Thomas Glenn
The United States of America as represented by the Secretary of
Whitesell Eric James
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