1.
Opt Express
; 32(5): 7553-7563, 2024 Feb 26.
Article
in English
| MEDLINE
| ID: mdl-38439433
ABSTRACT
We present an intra-cavity frequency doubled Q-switched diode-pumped alexandrite ring-laser directly emitting in the UV at 386â nm. Using LBO as nonlinear crystal, the laser yields a pulse energy up to 3 mJ at 500â Hz with an excellent beam quality of M2 = 1.1. The pulse length is about 920â ns, allowing for very narrow bandwidth in single longitudinal mode operation. The optical-to-optical efficiency for the UV laser is > 9% and almost unchanged compared to the fundamental laser. First injection-seeding experiments show single longitudinal mode operation. The parameters of the laser are suitable for the use as an emitter in a multi-purpose atmospheric Doppler lidar system.