High-efficiency Q-switched dual-wavelength emission at 1176 and 559 nm with intracavity Raman and sum-frequency generation

Abstract

An efficient Q-switched dual-wavelength laser with self-frequency Raman conversion in composite Nd:YVO(4) and intracavity sum-frequency generation in BBO is reported. With an input pump power of 17.5 W, average power of 0.53 W at the first-Stokes 1176 nm and average power of 1.67 W at the sum-frequency mixed 559 nm are simultaneously generated at a pulse repetition rate of 100 kHz, corresponding to a total conversion efficiency of 12.5%.

Thermal study in Eu3+-doped boehmite nanofibers and luminescence properties of the corresponding Eu3+:Al2O3

“…[1][2][3]. The macroscopic properties of phosphors, such as the emission spectrum or the luminous efficiency, rely on their composition, crystal structure, and microstructure [4][5][6][7][8][9].…”

Diode-pumped intracavity yellow–green Raman laser at 560nm with sum-frequency-generation☆☆This research is supported by the National Natural Science Foundation of China (No. 11104161 and No. 11104162 and No. 11104160) and Open Project of State Key laboratory of Crystal Material, (Shandong University, KF1103).

“…Moreover, the lasers around 560 nm have been widely applied in phycoerythrins, immunodetection and fluorescence microscopy etc., especially pulsed laser around 560 nm has applied in medicine, for example for treatment of freckles and wrinkles. In recent years, the sum-frequency generation (SFG) of solid state Raman laser has been shown to be an efficient way to produce the yellow-green lasers [12][13][14][15][16]. Chang et al reported a Q-switched dual-wavelength emission at 1176 and 559 nm with intracavity Raman and sum-frequency generation based on Nd:YVO 4 self-Raman laser with intracavity SFG in BBO crystal [12].…”

All-solid-state quasi-CW yellow laser with intracavity self-Raman conversion and sum frequency generation

“…There are reports on Q-switched operation of such lasers only [30,31]. Potentially the method of the intracavity SFG of Stokes and fundamental radiations has an advantage over the SHG of Stokes field method because intracavity intensity of fundamental radiation is higher than that of the Stokes one.…”