Laser Performance of Cr2+: CdSe Crystal with Anti-reflection Coating
Authors: Tarabrin M.K., Fernandez T.T., Wang Y., Lazarev V.A., Leonov S.O., Karasik V.E., Korostelin Y.V., Skasyrsky Y.K., Frolov M.P., Podmarkov Y.P., Kozlovsky V.I., Svelto C., Maddaloni P., Coluccelli N., Laporta P., Galzerano G.
Autors Affiliation: Bauman Moscow State Technical University, Moscow, 105005, Russian Federation; Dipartimento di Fisica, Politecnico di Milano, Milano, 20133, Italy; P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation; Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche, Milano, 20133, Italy; Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, 20133, Italy; Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, Pozzuoli (NA), 80078, Italy
Abstract: We demonstrated a continuous-wave laser using an anti-reflection coated Cr2+:CdSe crystal with transmission of 98 % at wavelength range from 2.0 to 2.7 μm and with relatively large laser damage threshold of 30 MW/cm2 for the first time. A maximum output power of 1 W at wavelength 2450 nm with an optical-optical efficiency of 48 % and a slope efficiency of 50 % was obtained when the incident pump power was 2.1 W. © 2017 IEEE
KeyWords: Antireflection coatings; Cadmium compounds; Continuous wave lasers; Efficiency; Laser damage; Reflective coatings, Anti reflection; Incident pump power; Laser damage threshold; Laser performance; Maximum output power; Optical-optical efficiency; Slope efficiencies; Wavelength ranges, II-VI semiconductors