Fusari F, Lagatsky A A, Jose G, Calvez S, Jha A, Dawson M D, Gupta J A, Sibbett W, Brown C T A
Scottish Universities Physics Alliance, J. F. Allen School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, Scotland, UK.
Opt Express. 2010 Oct 11;18(21):22090-8. doi: 10.1364/OE.18.022090.
We report on the spectroscopic characterization, continuous-wave and continuous wave mode-locked laser performance of bulk Tm(3+):GPNG fluorogermanate and Tm(3+)-Ho(3+):TZN tellurite glass lasers around 2 μm. A slope efficiency of up to 50% and 190 mW of output power were achieved from the Tm(3+):GPNG laser at 1944 nm during continuous wave operation. The Tm(3+)-Ho(3+):TZN laser produced a 26% slope efficiency with a maximum output power of 74 mW at 2012 nm. The Tm(3+):GPNG produced near-transform-limited pulses of 410 fs duration centered at 1997 nm with up to 84 mW of average output power and repetition frequency of 222 MHz when was passively modelocked using an ion-implanted InGaAsSb-based quantum well SESAM. Using the same SESAM, the Tm(3+)-Ho(3+):TZN laser generated 630-fs pulses with 38 mW of average output power at 2012 nm. Data analysis of pulses at different intracavity pulse energies provided an estimation of n(2) at 2012 nm of 2.9 × 10(-15) cm(2)/W for the Tm(3+)-Ho(3+):TZN.
我们报道了块状Tm(3+):GPNG氟锗酸盐和Tm(3+)-Ho(3+):TZN碲酸盐玻璃激光器在2μm附近的光谱特性、连续波和连续波锁模激光性能。在连续波运行期间，Tm(3+):GPNG激光器在1944nm处实现了高达50%的斜率效率和190mW的输出功率。Tm(3+)-Ho(3+):TZN激光器在2012nm处产生了26%的斜率效率，最大输出功率为74mW。当使用基于离子注入InGaAsSb的量子阱SESAM进行被动锁模时，Tm(3+):GPNG产生了中心波长为1997nm、持续时间为410fs的近变换极限脉冲，平均输出功率高达84mW，重复频率为222MHz。使用相同的SESAM，Tm(3+)-Ho(3+):TZN激光器在2012nm处产生了630fs的脉冲，平均输出功率为38mW。对不同腔内脉冲能量下的脉冲进行数据分析，得出Tm(3+)-Ho(3+):TZN在2012nm处的n(2)估计值为2.9×10(-15)cm(2)/W。
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