Pirri Angela, Alderighi Daniele, Toci Guido, Vannini Matteo, Nikl Martin, Sato Hiroki
Istituto di Fisica Applicata Nello Carrara, Consiglio Nazionale delle Ricerche IFAC-CNR, Via Madonna del Piano 10C, 50019 Sesto Fiorentino (FI), Italy.
Opt Express. 2009 Sep 28;17(20):18312-9. doi: 10.1364/OE.17.018312.
We report an extensive comparison of the laser performances of diode-pumped Yb(3+):YLF (30% at.) and Yb(3+):CaF(2) (5% at.) crystals, lasing at room-temperature and operating in two different operation mode, i.e. Continuous Wave (CW) and quasi-CW. An in-depth investigation of the crystals behavior by changing the pump power, clearly shows the crystal absorption depends on the lasing conditions. Therefore, we report an unambiguous definition of the slope efficiency calculated taken into account the real measured crystal absorption under laser action. Finally, we present a study of problems related to thermally induced losses which are expected influencing the laser performance.
我们报告了对二极管泵浦的Yb(3+):YLF（原子分数30%）和Yb(3+):CaF₂（原子分数5%）晶体激光性能的广泛比较，它们在室温下激射，并在两种不同的工作模式下运行，即连续波（CW）和准连续波。通过改变泵浦功率对晶体行为进行深入研究，清楚地表明晶体吸收取决于激射条件。因此，我们报告了在考虑激光作用下实际测量的晶体吸收的情况下计算斜率效率的明确定义。最后，我们对与热致损耗相关的问题进行了研究，预计这些问题会影响激光性能。
