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Oscillators

Definition: a device producing an oscillation – in contrast to an amplifier, for example

German: Oszillatoren

Category: laser devices and laser physics

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URL: https://www.rp-photonics.com/oscillators.html

In laser physics, the term laser oscillator is sometimes used for a laser device in order to distinguish it explicitly from an optical amplifier, where there is amplification by stimulated emission but no laser oscillation – or from an oscillator–amplifier combination.

A laser can be considered as a high-frequency optical oscillator (with optical frequencies normally be of the order of hundreds of terahertz) which consists of an optical amplifier and a resonator for optical feedback.

Similarly, an optical parametric oscillator is a device containing an optical parametric amplifier within an optical resonator. In contrast to a laser oscillator, one utilizes a kind of nonlinear amplification.

Besides, there are opto-electronic oscillators, generating trains of short light pulses.

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See also: lasers, laser resonators, optical amplifiers
and other articles in the category laser devices and laser physics

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