Use of a plasma temporal attenuator to investigate the pulse length dependence of CO2 laser induced damage

Gibson, D. R.; Wilson, A. D.
November 1985
Applied Physics Letters;11/1/1985, Vol. 47 Issue 9, p914
Academic Journal
A surface initiated plasma temporal attenuator enabling production of CO2 laser pulses with tunable durations (20–90 ns), similar temporal profiles, and near Gaussian spatial profiles, is described. Use of the technique to investigate the pulse length dependence and thereby elucidate the mechanism of CO2 laser damage is demonstrated for uncoated and diamondlike carbon antireflection coated n-type Ge.


Related Articles

  • Pulse stretching due to partial temporal overlap of two modes in a TEA CO[sub 2] laser. Nilaya, J. Padma; Biswas, Dhruba J. // Review of Scientific Instruments;Feb2000, Vol. 71 Issue 2, p579 

    Pulse duration as long as 14 μs has been obtained from a single longitudinal mode TEA CO[sub 2] laser. Such stretching occurred under conditions for which oscillation on a higher order transverse mode followed that on the TEM[sub 00] mode with partial temporal overlap between the two. Control...

  • Transverse-load characteristics of twisted long-period fibre gratings written by high-frequency CO2 laser pulses. Zhu, T.; Rao, Y.J.; Wang, J.L.; Liu, M. // Electronics Letters;4/13/2006, Vol. 42 Issue 8, p451 

    The transverse-load characteristics of a twisted long-period fibre grating (LPFG) written by high-frequency CO2 laser pulses are investigated for the first time to the authors' knowledge. It is observed that such a twisted LPFG can weaken the strong orientation-dependence of the transverse load...

  • Enhanced peak power and short pulse operation of planar waveguide CO[sub 2] lasers. Villarreal, F.; Murray, P. R.; Baker, H. J.; Hall, D. R. // Applied Physics Letters;4/16/2001, Vol. 78 Issue 16, p2276 

    We report a large peak power enhancement and reduction in pulse width for planar waveguide carbon dioxide lasers. Gain modulation through rf discharge power switching produces trains of laser pulses with peak power levels at up to 38 times the cw power level, with a pulse duration as low as 10...

  • Pulse shaping of transversely excited atmospheric CO2 laser using a simple plasma shutter. Hurst, Noah; Harilal, S. S. // Review of Scientific Instruments;Mar2009, Vol. 80 Issue 3, p035101 

    The pulse from a transversely excited atmospheric CO2 laser consists of a sharp spike followed by a long, drawn out tail region spanning about 2–5 μs caused by the nitrogen gas in the laser cavity. The nitrogen tail is undesirable in many applications because it decreases the average...

  • CO2 -laser induced LPFG torsion characteristics depending on length of twisted fibre. Wang, Y.-P.; Rao, Y.-J. // Electronics Letters;9/2/2004, Vol. 40 Issue 18, p1101 

    The unique torsion characteristics of the CO2-1aser-induced LPFG depend strongly on the length of the twisted fibre. While the LPFG is much shorter than the twisted fibre, its resonant wavelength and amplitude change wavelike with the twist-rate applied. In addition, the shift of the resonant...

  • Production of Multi-Terawatt Time-Structured CO2 Laser Pulses for Ion Acceleration. Haberberger, Dan; Tochitsky, Sergei; Gong, Chao; Joshi, Chan // AIP Conference Proceedings;11/5/2010, Vol. 1299 Issue 1, p737 

    The UCLA Neptune Laboratory CO2 laser system has been recently upgraded to produce 3ps multi-terawatt 10μm laser pulses. The laser energy is distributed over several 3 ps pulses separated by 18 ps. These temporally structured pulses are applied for laser driven ion acceleration in an H2 gas...

  • Efficient extreme ultraviolet plasma source generated by a CO2 laser and a liquid xenon microjet target. Ueno, Yoshifumi; Ariga, Tatsuya; Soumagne, George; Higashiguchi, Takeshi; Kubodera, Shoichi; Pogorelsky, Igor; Pavlishin, Igor; Stolyarov, Daniil; Babzien, Marcus; Kusche, Karl; Yakimenko, Vitaly // Applied Physics Letters;5/7/2007, Vol. 90 Issue 19, p191503 

    We demonstrated efficacy of a CO2-laser-produced xenon plasma in the extreme ultraviolet (EUV) spectral region at 13.5 nm at variable laser pulse widths between 200 ps and 25 ns. The plasma target was a 30 μm liquid xenon microjet. To ensure the optimum coupling of CO2 laser energy with the...

  • Update on Seeded SM-LWFA and Pseudo-Resonant LWFA Experiments — (STELLA-LW). Kimura, W. D.; Andreev, N. E.; Babzien, M.; Cline, D. B.; Ding, X.; Hooker, S. M.; Kallos, E.; Katsouleas, T. C.; Kusche, K. P.; Kuznetsov, S. V.; Muggli, P.; Pavlishin, I. V.; Pogorelsky, I. V.; Pogosova, A. A.; Steinhauer, L. C.; Stolyarov, D.; Ting, A.; Yakimenko, V.; Zigler, A.; Zhou, F. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p534 

    The Staged Electron Laser Acceleration — Laser Wakefield (STELLA-LW) experiment is investigating two new methods for laser wakefield acceleration (LWFA) using the TW CO2 laser available at the Brookhaven National Laboratory Accelerator Test Facility. The first is seeded self-modulated...

  • Experimental Evidence for Particle Acceleration by Stimulated Emission of Radiation. Banna, Samer; Berezovsky, Valery; Schächter, Levi // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p51 

    The interaction of electromagnetic radiation with free electrons in the presence of an active medium has several appealing outcomes. Among them the PASER scheme, standing for Particle Acceleration by Stimulated Emission of Radiation. In the framework of this scheme, energy stored in an active...


Read the Article


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

Try another library?
Sign out of this library

Other Topics