Collisionally excited extreme ultra-violet lasers created by laser irradiation of plasmas

G. J. Tallents, I. Al'miev, N. Booth, M. H. Edwards, L. M.R. Gartside, H. Huang, A. K. Rossall, D. S. Whittaker, Z. Zhai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Short wavelength extreme ultra-violet (EUV) lasers pumped by electron collisional excitation in plasmas irradiated by infra-red lasers have achieved saturated output down to wavelengths as short as 5.9 nm [1] and are now used for applications [2, 3]. These lasers operate without mirrors with output due to amplified spontaneous emission (ASE). The beam profiles consist typically of a large number of individual coherent beamlets [4] with a total near-field profile that is typically crescent shaped [5]. Gain profiles are spectrally narrow dependent on thermal Doppler broadening of ions of temperature ∼ 100 - 200 eV. With gain narrowing, this result in pulses of spectral width v/δv < 104. The shortest pulse durations of the output EUV lasers have consequently been close to Fourier transform limited at ≈ 3 ps [6, 7].

Original languageEnglish
Title of host publication2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09
Number of pages2
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event2009 IEEE LEOS Annual Meeting Conference - Belek-Antalya, Turkey
Duration: 4 Oct 20098 Oct 2009


Conference2009 IEEE LEOS Annual Meeting Conference
Abbreviated titleLEOS '09
Internet address


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