High-power Ti

Sapphire lasers: Temporal contrast and spectral narrowing

M. Kalashnikov, K. Osvay, W. Sandner

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

New extensions of the chirped pulse amplification (CPA) scheme designed specially for petawatt Ti:Sapphire lasers are considered. The two new schemes support a spectral bandwidth sufficient for 20 fs pulses and a temporal contrast of 1012. The Double CPA scheme consists of two CPA stages with an intermediate temporal pulse filtering for temporal contrast improvement. The scheme of Negative-Positive CPA amplification takes advantage of consecutive saturated amplification of down chirped and up chirped pulses. This allows a suppress imprint of gain narrowing, which usually limits the spectral bandwidth at the multi-terawatt power level, and reach the bandwidth in excess of 50 nm without using any direct spectral shaping of the pulse.

Original languageEnglish
Pages (from-to)219-223
Number of pages5
JournalLaser and Particle Beams
Volume25
Issue number2
DOIs
Publication statusPublished - Jun 2007

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Sapphire
Amplification
sapphire
Lasers
pulses
lasers
Bandwidth
bandwidth

Keywords

  • High power lasers
  • Saturation
  • Spectral narrowing
  • Temporal contrast

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

Cite this

High-power Ti : Sapphire lasers: Temporal contrast and spectral narrowing. / Kalashnikov, M.; Osvay, K.; Sandner, W.

In: Laser and Particle Beams, Vol. 25, No. 2, 06.2007, p. 219-223.

Research output: Contribution to journalArticle

Kalashnikov, M. ; Osvay, K. ; Sandner, W. / High-power Ti : Sapphire lasers: Temporal contrast and spectral narrowing. In: Laser and Particle Beams. 2007 ; Vol. 25, No. 2. pp. 219-223.
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