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Q: Fachverband Quantenoptik und Photonik

Q 49: Poster – Photonics, Lasers, and Applications

Q 49.30: Poster

Mittwoch, 12. März 2025, 17:00–19:00, Tent

Thin disk single frequency Ruby laser for metrology — •Sönke Metelmann¹, Luca Diedrich¹, Thomas Müller-Wirts², Carsten Reinhardt¹, Walter Luhs³, and Bernd Wellegehausen⁴ — ¹University of Applied Sciences Bremen — ²TEM-Messtechnik — ³Photonics Engineering Office — ⁴Institut für Quantenoptik - Leibniz University Hannover

In recent contributions [1-2], 405 nm diode laser pumped cw single frequency operation of a ruby laser have been presented in linear and ring laser configurations, showing the potential for metrology applications. In this contribution, we report on laser performance, using different commercially available few- to single-mode laser diodes, which can be driven with optical output powers up to 1.5 W. The Ruby laser performance, e.g. slope efficiency, thermal and spectral properties and linewidth measurements will be presented. With a thin disk ruby crystal of only 0.5 mm, an ultra-compact single frequency laser has been realized, delivering up to 15 mW at a diode pump power of 500 mW. Features of this laser system and investigations on frequency stability and linewidth, using interferometric and beat frequency techniques will be presented and discussed.

[1] W. Luhs and B. Wellegehausen, "Diode pumped cw ruby laser," OSA Continuum 2, 184-191 (2019)

[2] W. Luhs and B. Wellegehausen, "Diode pumped compact single frequency cw ruby laser", J. Phys. Communications 7 (2023) 055007

Keywords: Ruby Laser; monolithic; diode pumped; continuous wave; linewidth