Using multiple mutually incoherent fiber lasers to pump a coherent signal beam in an optical parametric oscillator

We use three-dimensional numerical modeling to show that multiple mutually incoherent lasers can be used to pump a single resonated coherent signal beam in an optical parametric oscillator (OPO). We consider as an example an OPO based on periodically poled lithium niobate pumped noncollinearly by CW...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2000-07, Vol.36 (7), p.828-834
Main Authors: Moore, G.T., Denman, C.A., Ross, T.S.
Format: Article
Language:English
Subjects:
Beams (radiation)
Coherence
Cutting
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
Laser beams
Laser excitation
Laser modes
Lasers
Mathematical models
Nonlinear optics
Numerical models
Optical beams
Optical Parametric Oscillators
Optical parametric oscillators and amplifiers
Optical pumping
Optics
Oscillators
Physics
Pump lasers
Pumps
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Summary:We use three-dimensional numerical modeling to show that multiple mutually incoherent lasers can be used to pump a single resonated coherent signal beam in an optical parametric oscillator (OPO). We consider as an example an OPO based on periodically poled lithium niobate pumped noncollinearly by CW Yb-doped fiber lasers. Our modeling, which neglects thermal lensing, is appropriate when the average power is kept low by chopping or pulsing the pump beams at a low duty cycle. We find that a signal beam can be produced with near-diffraction-limited beam quality and power considerably exceeding that of a single pump laser.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.848355