McCarthy, M.J. and Hanna, D.C.
Continuous-wave mode-locked singly resonant optical parametric oscillator synchronously pumped by a laser diode-pumped Nd:YLF laser
At CLEO'92: Conference on Lasers & Electro-Optics, United States.
10 - 15 May 1992.
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The wide bandwidth of the parametric interaction in nonlinear crystals makes the synchronously pumped optical parametric oscillator (OPO) potentially the most widely tunable source of ultrashort pulses. For practical use, a continuous wave (cw) pump source is desirable, so that each pulse in the train is identical. A desirable feature of a practical and reliable system would be the use of laser diode-pumped sources. To get sufficient peak power for cw synchronous pumping of a singly resonant oscillator (SRO) from the present generation of mode-locked diode pumped lasers, somewhat shorter pulses are needed than those typically generated by active mode-locking. Utilizing the techniques of additive-pulse mode-locking and efficient second-harmonic generation in an external resonant enhancement cavity, we have developed an ultrashort pulse cw mode-locked source pumped by a diode laser, with sufficiently high peak power for synchronous pumping of a SRO in an extracavity configuration.
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