Electra: Repetitively pulsed, 500 J, 100 ns, KrF oscillator

Wolford, M. F.; Hegeler, F.; Myers, M. C.; Giuliani, J. L.; Sethian, J. D.
January 2004
Applied Physics Letters;1/19/2004, Vol. 84 Issue 3, p326
Academic Journal
Electra is a repetitively pulsed, double-sided, electron-beam pumped krypton fluoride laser. Electra has recently operated as an oscillator with an output pulse of 510 J, with 100 ns pulse duration for single shots. At a 1 Hz repetition rate for a ten-shot burst, the laser output averaged 500 J per shot. The dependence of the laser energy on the partial pressures of Kr, Ar, and F[sub 2] were examined. Over a 10 to 30 psi total pressure range, the laser output energy decreases with decreasing argon concentration. Specifically, the laser output drops slightly as the argon concentration reduces from 60% to 40%, and then drops more noticeably as it is reduced to 0%. For the 60% Ar case, the optimal fluorine concentration is 0.25%, with a significant falloff in the laser energy from 0.25% to 0.1% and a gradual falloff from 0.25% to 0.7% fluorine. The present burst results indicate that the KrF kinetics is not very sensitive to the gas temperature at a total pressure of 20 psi. © 2004 American Institute of Physics.


Related Articles

  • Reduction of edge emission in electron beam diodes. Hegeler, F.; Friedman, M.; Myers, M. C.; Sethian, J. D.; Swanekamp, S. B. // Physics of Plasmas;Oct2002, Vol. 9 Issue 10, p4309 

    This paper presents measurements of the enhanced current density along the edges of a large area electron beam as well as successful techniques that eliminated this edge effect/beam halo. The beam current is measured with a Faraday cup array at the anode, and the spatial, time-integrated current...

  • Performance characteristics of the ArF excimer laser using a low-pressure argon-rich mixture. Suda, Akira; Obara, Minoru; Noguchi, Akira // Journal of Applied Physics;11/15/1986, Vol. 60 Issue 10, p3791 

    Examines the low-pressure operation of an electron (e)-beam excited argon fluorine (ArF) laser and krypton fluorine. Intrinsic efficiency of the ArF laser energy; Time histories of the e-beam current; Overview of the laser mixture and pulsewidth.

  • Resonator effects of Ar ionic excimer pumped by electron beam. Yongpeng, Zhao; Qi, Wang; Jincheng, Liu // Optical & Quantum Electronics;Apr2005, Vol. 37 Issue 5, p457 

    The third continuum of argon from 200 to 270 nm is obtained by electron beam pumping argon. With the front mirror and the rear mirror, the resonator effects are observed at 240 and 220 nm. Compared with the intensity of fluorescence, the intensity near 240 nm increases more than 10 times when...

  • Intense-laser generated relativistic electron transport in coaxial two-layer targets. Zhou, C. T.; He, X. T.; Yu, M. Y. // Applied Physics Letters;2/18/2008, Vol. 92 Issue 7, p071502 

    The transport and heating of laser produced relativistic electron beam propagating through coaxial two-layer solid-density plasma are studied using two-dimensional hybrid fluid-particle-in-cell simulation. When the energetic electrons enter the plastic and copper target, stronger heating is...

  • High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm. Yu, J. S.; Slivken, S.; Darvish, S. R.; Evans, A.; Gokden, B.; Razeghi, M. // Applied Physics Letters;7/25/2005, Vol. 87 Issue 4, p041104 

    A high-power continuous-wave (CW) operation of distributed-feedback quantum-cascade lasers using a buried grating with epitaxial regrowth up to temperatures of above 60 °C is demonstrated. For a high-reflectivity-coated 13 μm-wide and 3 mm-long cavity, CW output powers of 135 mW at 25...

  • Experiments on Laser and e-Beam Transport and Interaction in a Plasma Channel. Pogorelsky, I. V.; Pavlishin, I. V.; Ben-Zvi, I.; Yakimenko, V.; Kumita, T.; Kamiya, Y.; Zigler, A.; Diublov, A.; Andreev, N.; Bobrova, N.; Sasorov, P. // AIP Conference Proceedings;2004, Vol. 737 Issue 1, p504 

    An ablative capillary discharge is installed into a linac beamline and serves as a plasma source for generating and characterizing wakefields. Simultaneously, the electron beam is used as a tool for plasma diagnostics. A high-energy picosecond CO2 laser channeled within the same capillary...

  • Laser wakefield acceleration of electron beams beyond 1 GeV from an ablative capillary discharge waveguide. Haiyang Lu; Mingwei Liu; Wentao Wang; Cheng Wang; Jiansheng Liu; Aihua Deng; Jiancai Xu; Changquan Xia; Wentao Li; Hui Zhang; Xiaoming Lu; Jianzhou Wang; Xiaoyan Liang; Yuxin Leng; Baifei Shen; Nakajima, Kazuhisa; Ruxin Li; Zhizhan Xu // Applied Physics Letters;8/29/2011, Vol. 99 Issue 9, p091502 

    Laser wakefield acceleration of electrons well beyond 1 GeV and optical guiding of ultraintense laser pulses of peak powers up to 160 TW over a 4-cm long ablative capillary discharge plasma channel were experimentally demonstrated. Electron beams, with energies up to 1.8 GeV, were generated by...

  • Lasing from an Electron-Beam-Excited Nonchain HF Laser. Ivanov, N. G.; Losev, V. F. // Technical Physics;Sep2005, Vol. 50 Issue 9, p1186 

    The lasing parameters of a nonchain chemical HF laser (an active volume of 20 l) excited by a fast electron beam are studied at different energies delivered to the gas. It is shown that the laser operates efficiently when the energy deposited is below 30 J/l. Above specific excitation energies...

  • Pulsed electron beam generation in a simple discharge device. Rhee, M. J.; Strikovski, M. // Applied Physics Letters;9/13/2004, Vol. 85 Issue 11, p1916 

    We report a phenomenon of pulsed electron beam generation in a low-pressure gas discharge device. The cathode of the device is of simple geometry without a hollow cavity that is employed in the transient hollow cathode discharge (THCD) devices. The discharge and beam characteristics are measured...


Read the Article


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

Try another library?
Sign out of this library

Other Topics