Use of the prepulse technique to enhance the weak 18. 2-nm laser line in neonlike selenium

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Optics Letters; (United States)

DOI:https://doi.org/10.1364/OL.19.001137· OSTI ID:7242060

Nilsen, J; Moreno, J C ^[1]

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1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We report strong lasing in selenium on the neonlike 3[ital p][r arrow]3[ital s],[ital J] = 0[r arrow]1 transition at 18.2 nm when the prepulse technique of using a low-intensity prepulse before the main optical drive pulse is used to illuminate the selenium target. Without the use of the prepulse, this line is 2 orders of magnitude weaker. The usual [ital J] = 2[r arrow]1 lines at 20.6 and 20.9 nm are observed to dominate the spectra both with and without the use of the prepulse. These experiments may provide important clues to help our understanding of why the 18.2-nm line, which was predicted to dominate the laser output, was always observed weakly in previous experiments.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7242060
• Journal Information: Optics Letters; (United States), Journal Name: Optics Letters; (United States) Vol. 19:15; ISSN OPLEDP; ISSN 0146-9592
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
CHARGED PARTICLES
DESIGN
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
GAIN
IONIZING RADIATIONS
IONS
IRRADIATION
LASER RADIATION
LASERS
OPTICAL PUMPING
PULSED IRRADIATION
PUMPING
RADIATIONS
SELENIUM IONS
SPECTRA
X RADIATION
X-RAY LASERS
X-RAY SPECTRA