Design and construction of a 110 W green laser for medical application

✍ Scribed by F. Hajiesmaeilbaigi; H. Razzaghi; M. Mahdizadeh; M.R.A. Moghaddam; M. Ruzbehani

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 277 KB
• Volume: 43
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2011.04.013

✦ Synopsis

In this paper, the design and the construction of a high-power side-diode-pumped Nd:YAG solid-state laser at repetition rates of 6 and 10 kHz has been presented. Second harmonic of the Nd:YAG laser with green light at 532 nm, with an average power of 111.5 W at 10 kHz repetition rate, and with 90 ns pulse duration, has been obtained by the nonlinear crystal of KTP with 59% conversion efficiency and 12% diode-to-green optical-optical efficiency in the linear resonator. Beam spot size and divergence is 4 mm and 8 mrad, respectively. The laser stability is about 97%. As a medical application of this laser, investigation of degree of effectiveness and penetration depth of laser on adenomas of resected prostate after open prostatectomy has been done.