Q-switch

Q-switch
Q-switch «KYOO SWIHCH», noun, verb.
–n.
any one of various devices for causing a crystal laser to produce a high-energy pulse of extremely short duration: »

Q-switches are employed to obtain a very powerful pulsed output from a laser by allowing the laser to store up energy; when it reaches a maximum the blockage is quickly removed, and an intense pulse of laser radiation is emitted (New Scientist).

–v.t.
to cause (a crystal laser) to emit a high-energy pulse by means of a Q-switch: »

Saturable absorbers have recently been used very successfully to Q-switch ruby and neodymium-doped lasers (Michael Hercher).

[Q, abbreviation of quantum]

Useful english dictionary. 2012.

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