Conference on Lasers and Electro-Optics

Anti-Stokes Raman laser

J. C. White, Don O. Henderson

Published Jan 1, 1982• 0 citations

Abstract

This paper reports what we believe to be the first observation of a stimulated nonresonant anti-Stokes Raman laser. Thallium vapor which was inverted by selective photodissociation of TICI was used as the Raman medium. Using the second (532-nm) and third (355-nm) harmonics of a Nd:YAG laser as pump sources, stimulated anti-Stokes emission from the TI ( 6 p 2 P 3 / 2 0 ) to the TI ( 6 p 2 P 1 / 2 0 ) state was observed at 376 and 278 nm, respectively.

DOI: 10.1364/cleo.1982.thb3

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Anti-Stokes Raman Lasers

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This paper reports what we believe to be the first observations of stimulated, anti-Stokes Raman laser emission. A metastable Tl*(6p 2po3/2) population inversion was created by selective photodissociation of TlCl, and Raman scattering using 532 nm and 355 nm pump lasers resulted in stimulated emission at 376 nm and 278 nm, respectively. Likewise, inverted I*(5p5 2Po1/2) atoms have been used as a Raman medium; and with a 206 nm pumping source, we have generated tunable VUV radiation at 178 nm.

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The first observations of UV and VUV anti‐Stokes Raman laser emission are reported. Anti‐Stokes Raman scattering of 532 nm and 355 nm pump lasers using inversted metastable T1 atoms resulted in stimulated emission at 376 nm and 278 nm respectively. Also, a tunable 178 nm anti‐Stokes laser using metastable I atoms has been constructed.

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Conference on Lasers and Electro-Optics

Anti-Stokes Raman laser

J. C. White, Don O. Henderson

Published Jan 1, 1982• 0 citations

Publisher

Abstract

DOI: 10.1364/cleo.1982.thb3

Related papers

Anti-Stokes Raman Lasers

J. C. White, D. Henderson

Topical Meeting on Laser Techniques in the Extreme UltravioletJan 1, 19821 citation

Anti-Stokes Raman laser

J. C. White, Don O. Henderson

The first observation of nonresonant, stimulated anti-Stokes Raman emission is reported. A metastable $\mathrm{Tl}(6p^{2}P_{\frac{3}{2}}^{o})$ inversion is created by selective photodissociation of TlCl. Raman scattering from the Tl metastable state to ground using 532- and 355-nm pump lasers resulted in stimulated emission at 376 and 278 nm, respectively. Conversion efficiencies up to 10% are reported.The first observation of nonresonant, stimulated anti-Stokes Raman emission is reported. A metastable $\mathrm{Tl}(6p^{2}P_{\frac{3}{2}}^{o})$ inversion is created by selective photodissociation of TlCl. Raman scattering from the Tl metastable state to ground using 532- and 355-nm pump lasers resulted in stimulated emission at 376 and 278 nm, respectively. Conversion efficiencies up to 10% are reported.

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Observation of Stimulated Anti-Stokes Raman Scattering in Inverted Atomic Iodine

Robert L. Carman, W. Howard Lowdermilk

Nonresonant stimulated anti-Stokes Raman scattering from an inverted population in atomic iodine has been observed. The population inversion was achieved by flash photolysis of trifluoromethyliodide. A gain of ${e}^{7}$ was measured for a laser probe pulse at the anti-Stokes wavelength passing through the inverted iodine coincident with a laser pump pulse. This result is in good agreement with theoretical predictions.Nonresonant stimulated anti-Stokes Raman scattering from an inverted population in atomic iodine has been observed. The population inversion was achieved by flash photolysis of trifluoromethyliodide. A gain of ${e}^{7}$ was measured for a laser probe pulse at the anti-Stokes wavelength passing through the inverted iodine coincident with a laser pump pulse. This result is in good agreement with theoretical predictions.

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The anti-Stokes Raman laser process is an interesting method for frequency upconversion and generation of tunable UV radiation. This method requires no index matching and allows high-conversion efficiencies and output energies and large frequency shifts in a single step. A basic requirement is a population inversion between a metastable level and a suitable lower-lying level. So far anti- Stokes laser emission has been demonstrated using the metastable TI (6P3/2). l(5P1/2). and Br (4P1/2) levels, where a population inversion with respect to the corresponding atomic ground states has been generated by photodissociation of suitable compounds.1-3 For the Tl system efficiencies of 10 % and output energies of ~1 mJ (at 377 nm) have been reported,1 and with Br a shortest wavelength of 149 nm was possible by upconversion of 157.5-nm radiation of a F2 laser.3The anti-Stokes Raman laser process is an interesting method for frequency upconversion and generation of tunable UV radiation. This method requires no index matching and allows high-conversion efficiencies and output energies and large frequency shifts in a single step. A basic requirement is a population inversion between a metastable level and a suitable lower-lying level. So far anti- Stokes laser emission has been demonstrated using the metastable TI (6P3/2). l(5P1/2). and Br (4P1/2) levels, where a population inversion with respect to the corresponding atomic ground states has been generated by photodissociation of suitable compounds.1-3 For the Tl system efficiencies of 10 % and output energies of ~1 mJ (at 377 nm) have been reported,1 and with Br a shortest wavelength of 149 nm was possible by upconversion of 157.5-nm radiation of a F2 laser.3

Conference on Lasers and Electro-OpticsJan 1, 19840 citations

The first observation of nonresonant, stimulated anti-Stokes Raman emission is reported. A metastable

\mathrm{Tl}(6p^{2}P_{\frac{3}{2}}^{o})

inversion is created by selective photodissociation of TlCl. Raman scattering from the Tl metastable state to ground using 532- and 355-nm pump lasers resulted in stimulated emission at 376 and 278 nm, respectively. Conversion efficiencies up to 10% are reported.

{e}^{7}

was measured for a laser probe pulse at the anti-Stokes wavelength passing through the inverted iodine coincident with a laser pump pulse. This result is in good agreement with theoretical predictions.