Intracavity Frequency Doubling Deep-Ultraviolet Ho 3+ : ZBLAN Fiber Laser with Wavelength Tuning from 269.5 to 275.4 nm

Laser sources emitting in the deep ultraviolet (DUV) spectral region are required by numerous industrial and scientific applications owing to their characteristics of higher photon energy, more strongly scattering than other wavelengths and better absorption in most materials. DUV lasers can be produced by several techniques to date, mainly including free-electron lasers, excimer lasers, and high-...