Double raman scattering scheme for an XUV laser

Author

Papanyan, V.O. ; Bertolotti, Mario

Author_Institution

University of Rome, Rome, Italy

Volume

23

Issue

5

fYear

1987

fDate

5/1/1987 12:00:00 AM

Firstpage

551

Lastpage

556

Abstract

A new method is proposed to achieve XUV generation in an He-K mixture medium excited by an electrical discharge by means of a double stimulated Raman scattering (SRS) process. First a dye laser of 404 nm radiation is down-converted to $\\lambda _{s} = 1.209 \\mu$ m in a Stokes SRS and then the produced IR radiation is up-converted to $\\lambda _{as} = 64$ nm in an anti-Stokes SRS. The overall calculated efficiency of conversion of violet pulse energy into XUV pulse energy reaches $2 \\cdot 10^{-4}$ in a traveling-wave-type regime with tight focusing and 22 MW pumping power. The XUV pulse energy may reach 12.3 μJ and is limited by excited potassium quartet atoms density ( $8 \\cdot 10^{11}$ cm^-4for this case). The pump power may be lowered by using an IR resonator. Then with 6 ns pulse duration, the same XUV output energy as in the traveling-wave regime may be achieved with $1.7 \\cdot 10^{-4}$ efficiency and a violet pump power of 14 MW.

Keywords

Noble-gas lasers; Pulsed lasers; Ultraviolet lasers; Atomic beams; Atomic measurements; Helium; Laser excitation; Metastasis; Optical resonators; Pressure measurement; Pulse measurements; Raman scattering; Resonance;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.1987.1073399

Filename

1073399