Chinese Optics Letters, 2013, 11 (11): 112301, Published Online: Nov. 6, 2013
Femtosecond laser-inscribed waveguides in Nd3+:Y3+:SrF2 crystals Download: 679次
Abstract
Optical waveguides are fabricated in Nd3+:Y3+:SrF2 crystals by a 1-kHz femtosecond laser using the double-line approach. Waveguides with different separations (10, 15, and 20 \mm m) between two consecutive optical breakdown tracks are produced, and their optical performances are explored by end-fire coupling to 780-and 532-nm lasers. Propagation loss of the waveguide with 20-\mm m separation is estimated. The microphotoluminescence and micro-Raman spectra indicate that the original fluorescence and lattice structure of the Nd3+:Y3+:SrF2 crystals are well preserved in the waveguide. Therefore, the obtained waveguide structures are promising candidate for application in integrated waveguide lasers.
Shengzhi Sun, Liangbi Su, Yufeng Yuan, Zhenrong Sun. Femtosecond laser-inscribed waveguides in Nd3+:Y3+:SrF2 crystals[J]. Chinese Optics Letters, 2013, 11(11): 112301.