Improved performance of XeF lasers in argon diluent

Kimura, W. D.; Salesky, E. T.; Seamans, J. F.
November 1986
Applied Physics Letters;11/17/1986, Vol. 49 Issue 20, p1319
Academic Journal
A comparison of laser performance in electron beam pumped XeF using either neon or argon diluent is presented. Extraction measurements are performed at room temperature under high-energy loading conditions (160 kW/cm3, 1 μs laser pulse lengths) using either NF3 or F2 as halogen fuels. It is found with neon diluent that the laser output remains relatively constant during the excitation pulse, but with argon diluent the output increases almost linearly during the pulse. This continuous rise of the laser output with argon diluent leads to efficiencies higher than with neon diluent for input energy loadings >=100 J/l. There are also indications that the argon diluent mixture is less susceptible to halogen burn-up.


Related Articles

  • Efficiency of an electron-beam-pumped chemical laser with an SF[sub 6]–H[sub 2] working mixture. Orlovskiı, V. M.; Sosnin, É. A.; Tarasenko, V. F.; Ponomarenko, A. G.; Khapov, Yu. I. // Technical Physics;Jan99, Vol. 44 Issue 1, p69 

    Results are presented from a study of HF lasers pumped by non-chain chemical reactions initiated by a radially convergent and by a planar electron beam. The main channels of formation of vibrationally excited HF molecules are analyzed. The distribution of the energy density of the radiation in...

  • Laser action of nd[sup 8] (n+1)s[sup 2] -nd[sup 9] (n+1)p transitions in HgIII, CuII and AgII. Blagoev, K. B.; Popov, G.; Dimova, E. // Applied Physics B: Lasers & Optics;1996, Vol. 63 Issue 4, p349 

    A mechanism of the laser action of 5d[sup 8] 6s[sup 2] –5d[sup 9] 6p HgIII transitions is proposed. The explanation is based on atomic constants of the transitions and the predominant role of direct electron excitation of the upper laser level. The kinetic models of electron beam and...

  • Beam transmission in a high-power collective free-electron laser. Freund, H. P. // Physics of Fluids B: Plasma Physics;Jun93, Vol. 5 Issue 6, p1869 

    A recent free-electron laser amplifier experiment conducted at the Massachusetts Institute of Technology [M. E. Conde and G. Bekefi, Phys. Rev. Lett. 67, 3082 (1991)] has demonstrated high-power operation without recourse to a tapered wiggler field. The experimental configuration consisted in...

  • Possible emission of supermodes in a free electron laser with a transversely developed interaction space. Ginzburg, N. S.; Peskov, N. Yu.; Sergeev, A. S.; Arzhannikov, A. V.; Sinitskiı, S. L. // Technical Physics Letters;Mar99, Vol. 25 Issue 3, p179 

    A theoretical analysis is made of the formation of the transverse field profile in a free electron laser with an oversize planar-geometry Bragg cavity driven by a ribbon electron beam. It is shown that cw spatially coherent lasing may be achieved with an oversize parameter of the order of 50...

  • Wavelength-agile operation of an injection-controlled XeF(C...A) laser system. Hofmann, Th.; Yamaguchi, S.; Dane, C.B.; Wilson, W.L.; Sauerbrey, R.; Tittel, F.K.; Rubino, R.A.; Nighan, W.L. // Applied Physics Letters;2/11/1991, Vol. 58 Issue 6, p565 

    Reports on the performance of a pulsed laser system consisting of an electron beam pumped excimer laser injection-controlled by a wavelength-agile dye laser. Random sequence tuning over a 27 nanometer spectral region; Laser output energies with pulse durations; Pulse energy and spectral profile...

  • Microgun-pumped semiconductor laser. Molva, E.; Accomo, R.; Labrunie, G.; Cibert, J.; Bodin, C.; Le Si Dang; Feuillet, G. // Applied Physics Letters;2/22/1993, Vol. 62 Issue 8, p796 

    Demonstrates the possibility of a microgun-pumped semiconductor laser. Characteristics of the laser; Components of the compact cold electron source; Capability to use wide array of quantum-well heterostructures; Potential to cover the infrared-ultraviolet wavelength range; Importance for direct...

  • Small-signal gain measurements in an electron beam pumped F[sub 2] laser. Bastiaens, H.M.J.; van Dam, B.M.C.; Peters, P.J.M.; Witterman, W.J. // Applied Physics Letters;7/26/1993, Vol. 63 Issue 4, p438 

    Measures the small-signal gain of a molecular fluorine laser pumped by a coaxial electron beam for different gas mixtures. Use of probe laser in an oscillator/amplifier configuration; Comparison of temporal behavior between amplified probe laser and probe laser signals; Result of the quenching...

  • Ridge waveguide distributed feedback lasers with electron beam defined gratings. Temkin, H.; Dolan, G. J.; Logan, R. A.; Kazarinov, R. F.; Olsson, N. A.; Henry, C. H. // Applied Physics Letters;1/15/1985, Vol. 46 Issue 2, p105 

    We describe a ridge waveguide distributed feedback laser operating at λ=1.5 μm. The ridge waveguide has been formed by liquid phase epitaxial overgrowth over a dielectric-defined narrow stripe. Second order diffraction gratings have been written using electron beam writing and transferred...

  • Energy extraction measurements of an electron beam pumped, high Kr concentration KrF laser at elevated temperatures. Salesky, E. T.; Kimura, W. D. // Applied Physics Letters;10/15/1985, Vol. 47 Issue 8, p774 

    Energy extraction measurements are obtained with an electron beam pumped KrF laser for initial gas temperatures from 294 to 425 K. Gas mixtures investigated are 89.7% Ar/10% Kr/0.27% F2 at 1.23 amagats and 99.6% Kr/0.4% F2 at 0.81 amagats. These densities correspond to equivalent electron...

  • High efficiency multikilojoule HF chemical lasers using an electron beam initiated low-pressure mixture of H2/F2/NF3 or H2/F2/SF6. Kannari, Fumihiko; Inagaki, Hirohito; Obara, Minoru // Applied Physics Letters;1/27/1986, Vol. 48 Issue 4, p266 

    High electrical and high chemical efficiencies were simultaneously achieved for the multikilojoule HF chemical laser using a Lambda-type (inclined type) electron beam initiation scheme. The optimum addition of NF3 or SF6 fluorine donor could increase both efficiencies and could reduce the total...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics