Temperature influence on diode-pumped Tm:SrF₂-CaF₂ laser properties

Research status of rare-earth-ion-doped infrared laser

“…When Tm 3+ is doped in the crystal, it is greatly affected by the temperature. When the temperature is 77 K, the highest slope efficiency obtained is more than five times the slope efficiency at 300 K. As the temperature drops from 300 K to 77 K, the laser threshold is reduced by a factor of two [14]. In the field of highenergy ultrafast laser amplification technology, new gain devices with a large surface area and high thermal damage threshold can effectively solve the problem of thermal management during the amplification process.…”

Spectroscopic and laser properties of a broadly tunable diode-pumped Tm3+ :CaF2–SrF2 laser

“…The formation of different optical centers leads to inhomogeneous broadening of the absorption and Laser Physics Letters Spectroscopic and laser properties of a broadly tunable diode-pumped Tm 3+ :CaF 2 -SrF 2 laser emission spectra of RE 3+ ion dopants. This is favorable for diode pumping and tunability [9][10][11]. Also, clustering shortens the average distance between Tm 3+ ions and thus enhances the cross-relaxation process without much degradation of the host material's thermo-mechanical properties, in contrast with the effect of strongly increasing doping concentration [12].…”

“…In this letter, we present the spectroscopic and laser properties and wavelength tunability of fluoride Tm:CaF 2 -SrF 2 solid solution single crystal, to the best of our knowledge for the first time, as an alternative to traditional single crystal hosts. Preliminary results were presented in [10].…”