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Encyclopedia of Laser Physics and Technology

Master Oscillator Power Amplifier

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(Acronym: MOPA)

Definition: a laser system consisting of a seed laser and a laser amplifier for boosting the output power

The term master oscillator power amplifier (MOPA) refers to a configuration consisting of a master laser (or seed laser) and an optical amplifier to boost the output power. A special case is the master oscillator fiber amplifier (MOFA), where the power amplifier is a fiber device.

Although a MOPA configuration is in principle more complex than a laser which directly produces the required output power, the MOPA concept can have certain advantages:

However, the MOPA approach can also have disadvantages:

See also: amplifiers, master oscillator fiber amplifier, amplifier noise

Categories: amplifiers, lasers

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