title: Intracavity-pumped Cr2+:ZnSe laser with ultrabroad tuning range between 1880 and 3100 nm.
abstract: We obtained, what is to our knowledge, record tuning from an intracavity-pumped gain-switched Cr2+:ZnSe laser. In the experiments, a polycrystalline Cr2+:ZnSe sample with an absorption of about 43% at 1570 nm was used to minimize reabsorption losses at the lasing wavelengths below 2000 nm. By placing the gain medium inside the cavity of a pulsed KTP optical parametric oscillator (OPO) operating at 1570 nm, smooth, continuous tuning was achieved in the 1880-3100 nm range with four different sets of cavity optics. As high as 145 mW of average laser output power was obtained at 2365 nm with 1.2 W of intracavity OPO power.
authors.affiliation: Laser Research Laboratory, Department of Physics, Koç University, Rumelifeneri, Sariyer, Istanbul 34450, Turkey.
authors.forename: Umit
authors.initials: U
authors.lastname: Demirbas
authors.forename: Alphan
authors.initials: A
authors.lastname: Sennaroglu