Author(s): Chen, XD (Chen, Xudong); Chen, YW (Chen, Yuwei); Zhang, L (Zhang, Ling); Fan, FD (Fan, Feidi); Zhang, ZY (Zhang, Zhiyan); Zhang, GC (Zhang, Guochun); Wang, XY (Wang, Xiaoyang); Wang, LR (Wang, Lirong)

Source: OPTICS EXPRESS Volume: 31 Issue: 2 Pages: 802-809 DOI: 10.1364/OE.474095 Published: JAN 16 2023

Abstract: Ultraviolet (UV) beam generation at 266 nm using the sum-frequency (SFG) method with CsB3O5 (CBO) crystals was first suggested in 1997 [Opt. Lett. 22, 1840 (1997).]; however, there has been no further research in the past 25 years. Herein, by sum-frequency mixing in CBO crystals, we obtained a high conversion efficiency picosecond (ps) and a high-power nanosecond (ns) 266 nm UV beam output. First, a ps laser device with simultaneously radiated wavelengths of 1064 and 355 nm and repetition frequency of 10 Hz was used as the fundamental laser source, and the conversion efficiency from 1064 + 355 nm to 266 nm reached 20.35%. We then used a 1064 nm ns laser with a high output power and repetition frequency of 10 kHz as the pump source. We accurately modified the optimal phase matching direction of the CBO crystal, and the achieved output power at 266 nm reached 5.32 W.

Accession Number: WOS:000921618900003

PubMed ID: 36785129

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

wang, xiao yang                  0000-0003-1757-7300

ISSN: 1094-4087

Full Text: https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-2-802&id=524656