Kim Jae-Ihn, Meschede Dieter
Institut für Angewandte Physik, Universität Bonn, Germany.
Opt Express. 2008 Jul 7;16(14):10803-8. doi: 10.1364/oe.16.010803.
We have demonstrated a tunable single frequency source of continuous-wave (CW) coherent ultraviolet (UV) radiation at lambda (3omega) = 326 nm. Laser light of a tunable diode laser at lambda(omega) = 977 nm was split and injected into two independent fiber amplifiers yielding 1 W and 0.4 W, respectively. The 1 W branch was resonantly frequency doubled, resulting in 120 mW of useful power at lambda(2omega) = 488 nm. The third harmonic was generated by summation of the second branch of lambda(omega) and lambda(2omega) which were enhanced by a doubly resonant cavity. This light source has TEM(00) character and can be continuously tuned over more than 18 GHz. It is of interest for efficient laser cooling of In and potentially other applications.
我们已经展示了一种可调谐的单频连续波（CW）相干紫外（UV）辐射源，其波长为λ(3ω)=326nm。波长为λ(ω)=977nm的可调谐二极管激光器发出的激光被分光并注入到两个独立的光纤放大器中，分别产生1W和0.4W的功率。1W的支路进行了共振倍频，在波长λ(2ω)=488nm处产生了120mW的有用功率。通过将波长为λ(ω)的第二个支路与波长为λ(2ω)的支路进行叠加，并利用双共振腔进行增强，产生了三次谐波。该光源具有TEM(00)特性，并且可以在超过18GHz的范围内连续调谐。它对于铟的高效激光冷却以及潜在的其他应用具有重要意义。
