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rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2008-6-10
pubmed:abstractText
We show that optical parametric generation in a nonlinear crystal with a large group velocity mismatch between the pump and nearly-degenerate signal and idler is analogous to laser amplification in the medium with a gain recovery time comparable to the walk-off time. Based on this conclusion we propose to combine an OPO with a nonlinear saturable absorber or Kerr lens to generate directly high peak power sub-picosecond pulses using pump pulses ranging from tens of picoseconds to quasi-CW. Our analytical model predicts better than 80% photon conversion efficiency and pulse lengths that are of the order of a few hundred femtoseconds. Numerical simulations confirm our predictions and show that repetitive passive mode locking is feasible with a quasi-CW pump.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1094-4087
pubmed:author
pubmed:issnType
Electronic
pubmed:day
31
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4804-18
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Passive mode locking of optical parametric oscillators: an efficient technique for generating sub-picosecond pulses.
pubmed:affiliation
Johns Hopkins University, Baltimore MD 21218, USA.
pubmed:publicationType
Journal Article