论文信息 - Multiterawatt Ti:Sapphire/KrF laser GARPUN-MTW as a test bench facility for verification of combined amplification of nanosecond and subpicosecond pulses

Multiterawatt Ti:Sapphire/KrF laser GARPUN-MTW as a test bench facility for verification of combined amplification of nanosecond and subpicosecond pulses

The possibility of the same large-aperture KrF laser driver to amplify simultaneously both nanosecond pulses for thermonuclear target implosion and picosecond ones for fuel ignition is discussed relative to KrF-based Fusion Test Facility. In this way experiments were performed at hybrid Ti:Sapphire/KrF GARPUN-MTW facility on amplification of subpicosecond pulses. 2-TW, 330-fs pulses were produced with beam divergence 20 μrad in direct double-pass amplification scheme. Peak power as high as 30–40 TW can be achieved in 50-fs pulses, being combined with long pulses (of a few ns to 100 ns) of ~1 GW power.

[1] Andrew J. Schmitt,et al. Direct Drive Fusion Energy Shock Ignition Designs for Sub-MJ Lasers , 2009 .

[2] N. V. Didenko,et al. GARPUN-MTW: A hybrid Ti:Sapphire/KrF laser facility for simultaneous amplification of subpicosecond/nanosecond pulses relevant to fast-ignition ICF concept , 2007 .

[3] John Giuliani,et al. Pulse shaping and energy storage capabilities of angularly multiplexed KrF laser fusion drivers , 2009 .

[4] L. Perkins,et al. Shock ignition of thermonuclear fuel with high areal density. , 2006, Physical review letters.

[5] N. G. Basov,et al. Thermonuclear gain of ICF targets with direct heating of ignitor , 1992 .

[6] L. J. Atherton,et al. Overview of inertial fusion research in the United States , 2007 .

[7] Michael D. Perry,et al. Ignition and high gain with ultrapowerful lasers , 1994 .

[8] I. Aris,et al. Laser-triggered lightning discharge , 2002 .

[9] Andrew J. Schmitt,et al. Pathway to a lower cost high repetition rate ignition facility , 2005 .

[10] Stefano Atzeni,et al. Inertial fusion fast ignitor: Igniting pulse parameter window vs the penetration depth of the heating particles and the density of the precompressed fuel , 1999 .

[11] Andrew J. Schmitt,et al. A Laser Based Fusion Test Facility , 2009 .

[12] Sándor Szatmári,et al. On the use of KrF lasers for fast ignition , 2008 .

[13] Tabak,et al. Absorption of ultra-intense laser pulses. , 1992, Physical review letters.