Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster I

Q 23.49: Poster

Tuesday, March 12, 2024, 17:00–19:00, Tent B

Investigations of fluorescence lifetimes, thermal lensing, and laser performance of directly diode pumped cw ruby laser — Carsten Reinhardt and •Sönke Metelmann — Hochschule Bremen City University of Applied Sciences

Recently, the first laser ever, Maiman*s 694 nm ruby laser, regained new interest due to successful cw operation by pumping with high-power 405 nm laserdiodes [1]. Investigation on compact plane-plane Ruby laser[2] indicate stabilization of the resonator by thermal lensing, induced by the pump laser diode. Here we present results of studies on pump laserdiode performances for optical pumping of ruby crystals. Temperature dependend fluorescence lifetimes have been measured for different pump powers. First results on measurements of thermal lensing are presented. [1] W. Luhs, B. Wellegehausen; Diode pumped cw ruby laser, OSA Continuum 184, Vol.2, No.1 (2019) [2] W. Luhs, B. Wellegehausen; Diode pumped compact single frequency cw ruby laser, J. Physics Communications 7 (2023) 0055007

Keywords: Ruby; diode-pumped; Fluorescence-lifetime; LASER; thermal