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parametric oscillator |
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parametric oscillator [¦par·ə¦me·trik ′äs·ə‚lād·ər]
(electronics) An oscillator in which the reactance parameter of an energy-storage device is varied to obtain oscillation. (optics) A device consisting of an optically nonlinear crystal surrounded by a pair of mirrors to which is applied a relatively high-frequency laser beam and a relatively low-frequency signal, resulting in a low-frequency output whose frequency can be varied, usually by varying the indices of refraction. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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