Results 181 to 190 of about 27,399 (223)
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Robust photodetector for vacuum ultraviolet laser light
Review of Scientific Instruments, 2004An evacuated photocell including a pair of planar interdigitated electrodes fabricated on a sapphire substrate is proposed. Photocurrent in the photocell was found to be originated from both a photoemission effect on the gold cathode and an internal photoelectric effect in the sapphire substrate.
Tadashi Kitahara +2 more
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VACUUM ULTRAVIOLET LASER EMISSION FROM MOLECULAR HYDROGEN
Applied Physics Letters, 1970Using a short-risetime traveling-wave discharge system, lasing has been produced in molecular hydrogen in the 1600-Å region and confirmed by direct observation of extensive amplification in the direction of travel. Pulsewidths and powers on the order of 1 nsec and hundreds of kilowatts, respectively, are observed.
R. W. Waynant +3 more
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1998
Publisher Summary The chapter discusses vacuum ultraviolet lasers. Laser plasma ultraviolet (XUV) lasers (XRL) and high-order harmonic generation (HHG) are new sources. For both sources, the short-wavelength limit of the physical process is about a few nanometers, but the intensity and other beam qualities required for most practical uses are ...
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Publisher Summary The chapter discusses vacuum ultraviolet lasers. Laser plasma ultraviolet (XUV) lasers (XRL) and high-order harmonic generation (HHG) are new sources. For both sources, the short-wavelength limit of the physical process is about a few nanometers, but the intensity and other beam qualities required for most practical uses are ...
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High-intensity subpicosecond vacuum ultraviolet laser system
SPIE Proceedings, 2008We have been developing an ultrashort-pulse high-intensity vacuum ultraviolet (VUV) laser. Ultrashort VUV pulses at 126 nm have been produced in rare-gases by nonlinear wavelength conversion of an infrared Ti:sapphire laser at 882 nm. This pulse will be amplified inside an Ar 2 * amplifier excited by optical-field-induced ionization electrons.
Shoichi Kubodera +6 more
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Xenon molecular laser in the vacuum ultraviolet
IEEE Journal of Quantum Electronics, 1973Vacuum ultraviolet emission from high-pressure Xe gas under excitation by a pulsed electron beam has been investigated. When cavity mirrors were provided, significant line narrowing and a thousandfold increase in spectral intensity occurred at 1730 ± 10 A.
E. Ault +6 more
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Discharge-pumped vacuum ultraviolet Kr 2 * laser
SPIE Proceedings, 2001We have realized a stable self-sustained discharge of high-pressure rare gases (Ar and Kr) using a compact discharge device. The glow discharge was obtained up to 10 atm of pure Kr. The vacuum ultraviolet emission intensity centered at 148 nm abruptly increased when the charging voltage exceeded a certain value.
Takahiro Shirai +4 more
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Efficient and practical hydrogen vacuum ultraviolet laser
IEEE Journal of Quantum Electronics, 1975Investigations of the hydrogen vacuum ultraviolet (VUV) laser carried out in the Institute of Spectroscopy of the USSR Academy of Sciences are reviewed. Data for VUV TEA H 2 and D 2 lasers at gas pressure up to 2 atm and for low-pressure high-repetition rate hydrogen lasers axe presented. The upper limit quantum system efficiency for both gas dischaxge
I. Knyazev, V. Letokhov, V. Movshev
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A vacuum ultraviolet laser study of IBr
Molecular Physics, 1989Vacuum ultraviolet (VUV) fluorescence excitation spectra of jet-cooled IBr, between 173·6 and 163·5 nm, were recorded using tunable, laser-like VUV radiation generated by four-wave mixing in Mg vapour and Xe gas. An unambiguous vibrational analysis shows that transitions from υ″ = 0 of the ground state probe high vibrational levels of the first tier ...
R.H. Lipson, A.R. Hoy
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Shake-up as a mechanism for vacuum-ultraviolet lasers
Optics Letters, 1986We show how electron shake-up, as it occurs during core photoionization, may produce population inversion in the vacuum ultraviolet. Calculations for Li show the possibility of lasers at 165.3 and 113.2 nm.
S E, Harris, R G, Caro
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Generation of vacuum ultraviolet radiation for precision laser spectroscopy
Applied Optics, 1997We report on the generation of tunable nanosecond pulsed VUV radiation near 120 nm using difference-frequency mixing in H(2). Our scheme uses two dye lasers, one fixed at 606 nm and the other tunable in the red. These convenient wavelengths simplify the metrology needed for accurate VUV laser spectroscopy.
N, Melikechi +2 more
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