Q-switching

Introduced: January 2023

Full Title

Full titles differ between systems:

IPC:

Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range > Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating > Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping > Q-switching

CPC:

Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range (semiconductors lasers H01S5/00) > Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating > Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping > Q-switching

Of 7 combined children, 5 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 1974.

Child Classifications

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H01S 3/1124 CPC only CPC only
H01S 3/1127 CPC only CPC only
H01S 3/113 using intracavity saturable absorbers since 1974 IPC+CPC Available in IPC and CPC
H01S 3/115 using intracavity electro-optic devices since 1985 IPC+CPC Available in IPC and CPC
H01S 3/117 using intracavity acousto-optic devices since 1985 IPC+CPC Available in IPC and CPC
H01S 3/121 using intracavity mechanical devices since 1985 IPC+CPC Available in IPC and CPC
H01S 3/127 Plural Q-switches since 1985 IPC+CPC Available in IPC and CPC