Mode-locked optical parametric oscillator apparatus

Details Mode-locked optical parametric oscillator apparatus Mode-locked optical parametric oscillator apparatus

1978-09-08

1979-12-25

Rolinec, Rudolph V.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Multiaperture

331107R, H03F 700

Patent

active

041807510

ABSTRACT:
Improved mode-locked optical parametric oscillator apparatus comprises a mode-locked pump laser having a cavity with a predetermined effective length l.sub.p and a parametric oscillator having a nonlinear crystal, such as lithium niobate (LiNbO.sub.3), and singly resonant mirrors spaced apart by an effective distance l.sub.o which is substantially less than l.sub.p, i.e., l.sub.p .apprxeq.nl.sub.o where n.apprxeq.5-50. The interaction of the mode-locked pump output with the nonlinear crystal produces parametric outputs at signal (f.sub.s) and idler (f.sub.i) frequencies, the parametric oscillator mirrors being singly resonant at one of those two frequencies. The parametric oscillator may be disposed either externally of or within the pump cavity and the pump laser optionally may be Q-switched. The parametric oscillator apparatus of this invention greatly increases the stability of the mode-locked output under normal operating conditions and enables relatively wide tuning of the apparatus without adjustment of the pump or oscillator cavity lengths.

REFERENCES:
Weisman et al., "Optics Communication", Oct. 1976, pp. 28-32.
Becker et al., "Journal of Applied Physics", Sep. 1974, pp. 3996-4005.

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