Theoretical high-efficiency extraction study of a short-pulse electron-beam-pumped ArF laser amplifier with atmospheric pressure Ar-rich mixtures

Young Woo Lee, Eiichi Matsui, Fumihiko Kannari, Minoru Obara

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The single-pass (50 cm) amplifier performance of an atmospheric-pressure ArF laser pumped by a 65-ns full-width-at-half-maximum short-pulse electron beam was investigated theoretically for a wide range of excitation rates (0.1-2.0 MW/cm3). Atmospheric mixtures of Ne, Ar, and F2 (three mixtures of Ar = 40%, 70%, and Ne-free) were studied. A kinetic numerical model of the ArF amplifier with a Ne buffer system was constructed. A one-dimensional propagation treatment considered the gain depletion and saturation absorption spatially and temporally along the optical axis. In this model the rate constants for electron quenching of ArF* of 1.6 × 10-7, 1.9 × 10-7, and 2.4 × 10-7 cm3/s were used for Ar concentrations of 40%, 70%, and Ar/F2 mixture, respectively. With this amplifier model analysis, good agreement was obtained between theory and experiment. For the three mixtures, the extracted intensity was calculated using the optimum input intensities at each excitation rate. As a result, power efficiencies of over 10% were predicted at excitation rates ranging from 0.5 to 2.0 MW/cm3.

Original languageEnglish
Pages (from-to)2053-2066
Number of pages14
JournalIEEE Journal of Quantum Electronics
Volume25
Issue number9
DOIs
Publication statusPublished - 1989 Sep

Fingerprint

Light amplifiers
Atmospheric pressure
Electron beams
atmospheric pressure
amplifiers
electron beams
pulses
lasers
excitation
power efficiency
Full width at half maximum
Numerical models
Quenching
Rate constants
depletion
buffers
quenching
saturation
Kinetics
propagation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Theoretical high-efficiency extraction study of a short-pulse electron-beam-pumped ArF laser amplifier with atmospheric pressure Ar-rich mixtures. / Lee, Young Woo; Matsui, Eiichi; Kannari, Fumihiko; Obara, Minoru.

In: IEEE Journal of Quantum Electronics, Vol. 25, No. 9, 09.1989, p. 2053-2066.

Research output: Contribution to journalArticle

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