High-efficiency frequency upconversion of 1.5 mu m laser based on a doubly resonant external ring cavity with a low finesse for signal field
2017 (English)In: Applied physics. B, Lasers and optics (Print), ISSN 0946-2171, E-ISSN 1432-0649, Vol. 123, no 2, 52Article in journal (Refereed) Published
A doubly resonant external ring cavity with a low finesse for the signal field is used to improve the frequency upconversion efficiency of a weak 1583 nm signal laser to 636 nm by mixing with a resonance power enhanced 1064 nm pump laser in a 25 mm periodically poled lithium niobate crystal. The process of frequency upconversion is described and optimized by the doubly resonant cavity-enhanced sum frequency generation theory under the condition of undepleted pump approximation. By selecting the suitable reflectivity of the signal input mirror and the incident pump power, a cavity-enhanced frequency conversion efficiency of 94.6% was obtained for signal powers up to 25 mW with an input pump power of 780 mW.
Place, publisher, year, edition, pages
2017. Vol. 123, no 2, 52
IdentifiersURN: urn:nbn:se:umu:diva-133210DOI: 10.1007/s00340-016-6626-2ISI: 000394290900001OAI: oai:DiVA.org:umu-133210DiVA: diva2:1088551