In:
Laser and Particle Beams, Cambridge University Press (CUP), Vol. 23, No. 2 ( 2005-06), p. 113-116
Abstract:
This paper reports on a novel approach for producing high energy
femtosecond pulses without external amplification. The so-called chirped-pulse oscillator (CPO) concept is based on an extended-cavity
oscillator, operating at small net positive intracavity group delay dispersion (GDD), over a broad spectral range by the use of chirped
multilayer mirrors. The resultant chirped picosecond pulses are compressed by a dispersive delay line external to the laser cavity. Utilizing this
technique, sub-30 fs pulses with an energy exceeding 200 nJ at a repetition rate of 11 MHz were produced. The demonstrated peak power in
excess of 5 MW is the highest ever achieved from a cw-pumped laser and is expected to be scaleable to tens of megawatts by increasing the pump power
and/or decreasing the repetition rate. The demonstrated source allows micromachining of any materials under relaxed focusing conditions.
Type of Medium:
Online Resource
ISSN:
0263-0346
,
1469-803X
DOI:
10.1017/S0263034605050196
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
2005
detail.hit.zdb_id:
710110-7
detail.hit.zdb_id:
2021816-3
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