- threshold of parametric excitation
- порог параметрического возбуждения
English-Russian electronics dictionary .
English-Russian electronics dictionary .
Parametric oscillator — A parametric oscillator is a simple harmonic oscillator whose parameters (its resonance frequency omega and damping eta) vary in time in a defined wayAnother intuitive way of understanding a parametric oscillator is as follows: a parametric… … Wikipedia
Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle … Wikipedia
Optical amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… … Wikipedia
Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale … Wikipedia
M. Salimullah — Professor M. Salimullah, born on January 5, 1949 at Dhaka, Bangladesh, is Dean, Faculty of Physical and Mathematical Sciences and Chairman of Department of Physics in Jahangirnagar University, Bangladesh. passed B.Sc.(Hons) and M.Sc.(Thesis) in… … Wikipedia
Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment … Wikipedia
Quantum amplifier — In physics, the term quantum amplifier may refer to any device, which use some non classical (quantum) effects for amplification of signal. In this sense, the active element of an optical laser can be considered as quantum amplifier.The weak… … Wikipedia