Patent ID: 11942751
Assignee: HAMAMATSU PHOTONICS K.K.
Field: Optics (Instruments)
Classification: CPC B  H  G | IPC B  G  H

Claim 5:
6. The laser device according to claim 1,
wherein the phase control unit includes a liquid crystal type spatial phase modulator that displays a phase modulation pattern for diffracting the received laser light to branch the laser light into a plurality of rays of diffraction light and to emit the branched rays of diffraction light, emits 0th-order light of the laser light as the non-control light, and emits another order diffraction light of the laser light as the control light, and
wherein, in the correction process, the control unit adjusts the phase modulation pattern displayed on the liquid crystal type spatial phase modulator on the basis of a detection result for the non-control light to correct a control state for a spatial phase of the control light in the phase control unit.