| Subject | English | German |
| opt. | intracavity phase modulator | Resonatorphasenmodulator (phase modulator for use within the resonant cavity of a laser) |
| opt. | optical spatial phase modulator | optischer Modulator für die Phase der Raumfrequenzen |
| tech. | phase modulator | Phasenmodulator |
| tech. | phase modulator | Phasenwinkelmodulator |