The QCW-177 quasi-continuous laser operates in the vacuum ultraviolet band. Its generation process requires a complex and precise optical system and laser technology. The photon energy is extremely high and can interact specifically with matter.
| Wavelength | 177 nm |
| Operational mode | QCW |
| Power | 20 mW |
| M2 | TEM00 , <1.5 |
| Repetition rate | 80 MHz |
| Pulse duration | 12 ns |
| Energy per pulse | 0.25 nJ |
| ARPES |
| PEEM |
| DUV laser Raman spectroscopy |