It is already five years that I blogged nothing here. Just give a short outlines here to show the main research achievements.<\/p>\n\n\n\n
We have improved and maturized the Raman fiber amplifier based guide star lasers. The laser can now operate at CW, 100 microsecond quasi-CW<\/a>, and pulsed at Larmor frequency<\/a>. Laser prototypes were tested at telescopes for sodium guide star, and also for mesospheric magnetometry<\/a>.<\/p>\n\n\n\n With cascaded random Raman fiber laser, we have demonstrated up to 11 th Raman Stokes light generation. With a Yb pump laser at 1 micron, continuous wavelength tuning up to 2 micron<\/a> were demonstrated. With this technology<\/a>, fiber lasers can now output more than 100 W at any wavelength from 1030 nm to 2000 nm<\/a>.<\/p>\n\n\n\n We continued our study on mode locked Raman fiber lasers, have made some interesting demonstrations including NPR mode locked dissipative soliton<\/a>, figure of 8 dissipative soliton<\/a>, rectangular pulse generation<\/a> etc. We believe we have improved the understanding of mode locked Raman fiber lasers now.<\/p>\n\n\n\n Amplified spontanesou emission sources were found to be useful for pumping cascaded random Raman fiber lasers<\/a> and mode locked Raman fiber lasers<\/a>.<\/p>\n\n\n\n Specialty<\/a> lasers<\/a> at<\/a> various<\/a> wavelengths<\/a> were demonstrated with wavelength tuning of fiber lasers and second harmonic generations<\/a>.<\/p>\n\n\n\n