Freiburg 2024 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 46: Lasers I

Q 46.6: Talk

Thursday, March 14, 2024, 12:15–12:30, HS 3118

Optical pumped 10µm amplifier — •Bernd Witzel, Paul-Émile Chantrel, Bernard Sévigny, and Michele Piché — Centre d’Optique Photonique et Laser (COPL) and Département de Physique de Génie Physique et d’Optique Université Laval, Québec, Québec, G1V 0A6,Canada

We have demonstrated a high-energy, single-crystal Optical Parametric Oscillator (OPO) pumped directly by a Nd-YAG laser operating at 1064 nm. In our study, we compare this system to a standard Master Oscillator Power Amplifier (MOPA) setup equipped with one OPO and four amplification stages. We achieved pulse energies of 90 mJ at 2 µ m for the high-energy OPO and 115 mJ for the MOPA system. The duration of both the signal and idler beams is approximately seven nanoseconds. Both systems allow for wavelength tuning between 1.9 µ m and 2.4µ m. We aim to explore the feasibility of pumping a 10 µ m amplifier and present our initial findings regarding this amplification. The active gas employed in this amplifier is CO₂ under high-pressure. This system is designed for the amplification of 10 µ m ultra-short laser pulses with a duration of 200 fs.

Keywords: short pulse CO2 laser; optical pumped laser; HHG