| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 734568 | Optics & Laser Technology | 2013 | 5 Pages |
We analyzed, designed and fabricated a U-type resonator for intra-cavity frequency doubling of a diode-side-pumped Q-switched Nd:YAG rod laser with high power and high stability for surgery of prostatic tissue. The resonator stability conditions were analyzed graphically in the various configurations for a U-type resonator. We obtained green light at 532 nm using a single KTP crystal, with average output power of 151 W at 10 kHz repetition rate, and with 113 ns pulse duration at 810 W input pump power. We achieved 1064–532 nm conversion efficiency of 75.8%, and pump-to-green optical–optical efficiency of 18.6%. The green power fluctuation was ±1.0% and pointing stability was better than 4 μrad. The green laser output was coupled to a side-firing medical fiber to transfer the laser beam to the prostatic tissue.
► We design and fabricate compact pulsed green laser system for prostate surgery. ► We made a 151 W highly stable pulsed green laser with pulse width of 114 ns at 10 kHz. ► The conversion efficiency of IR to green is 75.8% and pump to green efficiency is 18.6%. ► Green laser has been successfully applied for more than 20 surgeries to treat benign prostatic hyperplasia.
