We developed a compact Ho:YLF oscillator-amplifier system in a novel setup to utilise the unpolarised pump power from a fibre laser efficiently, and produced 21.3 mJ at 1 kHz, with an M (2) better than 1.1. The amplified energies agreed well with the predicted values from a two dimensional rotational symmetric amplifier model that we developed. The model considers upconversion losses and ground-state depletion, as well as the spatial distribution of the pump beam.
|Number of pages||6|
|Journal||Applied Physics B: Lasers and Optics|
|Publication status||Published - Apr 2010|
- HO-YAG LASER