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Temporal coherence ...
Temporal coherence in mirrorless optical parametric oscillators
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- Strömqvist, Gustav (author)
- KTH,Laserfysik
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- Pasiskevicius, Valdas (author)
- KTH,Laserfysik
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- Canalias, Carlota (author)
- KTH,Laserfysik
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Aschieri, Pierre (author)
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Picozzi, Antonio (author)
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Montes, Carlos (author)
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Journal of the Optical Society of America. B, Optical physics. - 0740-3224 .- 1520-8540. ; 29:6, s. 1194-1202
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- One of the unique features of mirrorless optical parametric oscillators based on counterpropagating three-wave interactions is the narrow spectral width of the wave generated in the backward direction. In this work, we investigate experimentally and numerically the influence that a strong phase modulation in the pump has on the spectral bandwidths of the parametric waves and on the efficiency of the nonlinear interaction. The effects of group-velocity mismatch and group-velocity dispersion are elucidated. In particular, it is shown that the substantial increase in temporal coherence of the backward-generated wave can be obtained even for pumping with a temporally incoherent pump. A configuration of a mirrorless optical parametric oscillator is proposed where this gain in spectral coherence is maximized without a penalty in conversion efficiency by employing group-velocity matching of the pump and the forward-generated parametric wave.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Counterpropagating
- Group velocities
- Group-velocity mismatch
- Incoherent pump
- Nonlinear interactions
- Parametric waves
- Spectral bandwidth
- Spectral coherence
- Spectral widths
- Temporal coherence
- Three-wave interactions
- Unique features
- Conversion efficiency
- Phase modulation
Publication and Content Type
- ref (subject category)
- art (subject category)
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