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Semiconductor saturable absorber Q-switching of a holmium micro-laser
- Source :
- Optics Express, Repositori Institucional de la Universitat Rovira i Virgili, instname
- Publication Year :
- 2017
-
Abstract
- Filiació URV: SI We report on a Holmium micro-laser passively Q-switched by a semiconductor saturable absorber (SSA), for the first time to the best of our knowledge. It is based on a 1 at.% Ho:YAG ceramic with good energy storage capability and several commercial transmission-type SSAs with 0.24% modulation depth. Under in-band pumping by a Tm fiber laser at 1910 nm, the Ho micro-laser generated 450 mW at 2089 nm with 37% slope efficiency. Stable 89 ns, 3.2 ¿J pulses are achieved at a repetition rate of 141 kHz. Further shortening of the laser pulses is feasible with the increase of the modulation depth of the SSA while power scaling may lead to Q-switching at MHz-range repetition rates.
Details
- Database :
- OpenAIRE
- Journal :
- Optics Express, Repositori Institucional de la Universitat Rovira i Virgili, instname
- Accession number :
- edsair.RECOLECTA.....93640db5f9ad02caa14b14fed68a1cb1
- Full Text :
- https://doi.org/10.1364/OE.25.004579