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Increasing the efficiency of the intra-cavity generation of ultra-short radially polarized pulses in thin-disk resonators with grating waveguide structures

, , , , , , , und . OSA Continuum 4 (2): 262--278 (Februar 2021)

Zusammenfassung

In this paper, we report on the investigation of two different approaches based on grating waveguide structures (GWS) to generate radially polarized ultra-short pulses in thin-disk laser resonators. In previously reported mode-locked thin-disk oscillators emitting radially polarized pulses, a partly reflective GWS was employed as an outcoupling element for polarization shaping. This partly reflective GWS introduced significant losses for the outcoupled radiation, resulting in a reduced optical efficiency. The aim of the investigations presented here is to explore the possibility of improving the optical efficiency by using a highly reflective GWS in different resonator configurations, which circumvents the loss port present for the partly reflective GWS. The investigations show that using a highly reflective GWS as a folding mirror of the resonator enables a significant improvement of the optical efficiency compared to the previously reported configurations.

Links und Ressourcen

DOI:
10.1364/OSAC.414100
URL:
BibTeX-Schlüssel:
Beirow:21
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