Construction or shape of the optical resonator

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Semiconductor lasers > Construction or shape of the optical resonator

CPC:

Semiconductor lasers (superluminescent diodes H10H20/00) > Construction or shape of the optical resonator

CPC subdivides this area 4x more granularly than IPC with 13 additional codes.

13 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2000.

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H01S 5/1003 +4 CPC CPC only CPC only
H01S 5/1021 CPC only CPC only
H01S 5/1025 CPC only CPC only
H01S 5/1028 +1 CPC CPC only CPC only
H01S 5/1039 CPC only CPC only
H01S 5/1042 CPC only CPC only
H01S 5/1046 CPC only CPC only
H01S 5/1053 +4 CPC CPC only CPC only
H01S 5/1071 +1 CPC CPC only CPC only
H01S 5/1078 CPC only CPC only
H01S 5/1082 +1 CPC CPC only CPC only
H01S 5/1089 CPC only CPC only
H01S 5/1092 +1 CPC CPC only CPC only
H01S 5/11 Comprising a photonic bandgap structure since 2021 IPC+CPC Available in IPC and CPC
H01S 5/12 the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers (comprising a photonic bandgap structure H01S5/11; surface-emitting lasers H01S5/18) since 2000 +9 CPC IPC+CPC Available in IPC and CPC
H01S 5/14 External cavity lasers (H01S5/18 takes precedence; mode locking H01S5/065) since 2000 +4 CPC IPC+CPC Available in IPC and CPC
H01S 5/16 Window-type lasers, i.e. with a region of non-absorbing material between the active region and the reflecting surface (H01S5/14 takes precedence) since 2000 +4 CPC IPC+CPC Available in IPC and CPC
H01S 5/18 Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities since 2000 IPC+CPC Available in IPC and CPC

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

Class H01,2013–2023, worldwide · Source: EPO PATSTAT