Translator Disclaimer
16 March 2016 Continuous-wave generation and tunability of eye-safe resonantly diode-pumped Er:YAG laser
Author Affiliations +
Laser sources generating radiation in the spectral range from 1.5 to 1.7 μm are very attractive for many applications such as satellite communication, range finding, spectroscopy, and atmospheric sensing. The goal of our research was an investigation of continuous-wave generation and wavelength tuning possibility of diode pumped eye-safe Er:YAG laser emitting radiation around 1645 nm. We used two 0.5 at. % doped Er:YAG active media with lengths of 10 mm and 25 mm (diameter 5 mm). As a pumping source, a fibre-coupled 1452 nm laser-diode was utilized, which giving possibility of the in-band pumping with a small quantum defect and low thermal stress of the active bulk laser material. The 150 mm long resonator was formed by a pump mirror (HT @ 1450 nm, HR @ 1610 - 1660 nm) and output coupler with 96 % reflectivity at 1610 - 1660 nm. For continuous-wave generation, the maximal output powers were 0.7 W and 1 W for 10 mm and 25 mm long laser crystals, respectively. The corresponding slope efficiencies with respect to absorbed pump power for these Er:YAG lasers were 26.5 % and 37.8 %, respectively. The beam spatial structure was close to the fundamental Gaussian mode. A wavelength tunability was realized by a birefringent plate and four local spectral maxima at 1616, 1633, 1645, and 1657 nm were reached. The output characteristics of the designed and realized resonantly diode-pumped eye-safe Er:YAG laser show that this compact system has a potential for usage mainly in spectroscopic fields.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michal Němec, Lukás Indra, Jan Šulc, and Helena Jelínková "Continuous-wave generation and tunability of eye-safe resonantly diode-pumped Er:YAG laser", Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 97261B (16 March 2016);


Tm:GGAG crystal for 2µm tunable diode-pumped laser
Proceedings of SPIE (April 27 2016)
Resonantly diode pumped eye safe Er YAG laser with fiber...
Proceedings of SPIE (February 15 2018)
High power Er YAG laser at 1646 nm pumped by...
Proceedings of SPIE (December 23 2004)
Crystals for lasers with diode pump
Proceedings of SPIE (March 11 1996)
Diode pumped Nd:GdVO4 laser tunable at 1.06 μm
Proceedings of SPIE (November 18 2008)

Back to Top