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Passive Q-switching of Yb bulk lasers by a graphene saturable absorber

Passive Q-switching of Yb bulk lasers by a graphene saturable absorber

Authors :
Universitat Rovira i Virgili
Loiko, P. A.; Serres, J. M.; Mateos, X.; Liu, J.; Zhang, H.; Yasukevich, A. S.; Yumashev, K. V.; Petrov, V.; Griebner, U.; Aguilo, M.; Diaz, F.
Universitat Rovira i Virgili
Loiko, P. A.; Serres, J. M.; Mateos, X.; Liu, J.; Zhang, H.; Yasukevich, A. S.; Yumashev, K. V.; Petrov, V.; Griebner, U.; Aguilo, M.; Diaz, F.
Source :
Applied Physics B-Lasers And Optics; 10.1007/s00340-016-6384-1; Applied Physics B-Lasers And Optics. 122 (4):
Publication Year :
2016

Abstract

Compact Yb:KLu(WO4)(2) and Yb: LuVO4 lasers diode-pumped at 978 nm are passively Q-switched by a single-layer graphene saturable absorber. The Yb:KLu(WO4)(2) laser generated 165 ns/0.49 mu J pulses at 1030 nm with 170 mW average output power and 12 % slope efficiency. With the Yb:LuVO4 laser, 152 ns/0.83 mu J pulses were achieved. The output power reached 300 mW at 1024 nm, and the slope efficiency was 10 %. Laser operation in a plano-plano cavity is achieved with both crystals with thermal lensing playing a key role in their performance. A model describing graphene Q-switched Yb lasers is developed. Our results indicate the potential of graphene for passive Q-switching of similar to 1 mu m bulk lasers.

Details

Database :
OAIster
Journal :
Applied Physics B-Lasers And Optics; 10.1007/s00340-016-6384-1; Applied Physics B-Lasers And Optics. 122 (4):
Publication Type :
Electronic Resource
Accession number :
edsoai.on1443598571
Document Type :
Electronic Resource