Title :
High Energy, High Peak Power 1342-nm Picosecond Nd:YVO4 Regenerative Amplifier
Author :
Ying Chen ; Ke Liu ; Jing Yang ; Nan Zong ; Feng Yang ; Hong-Yan Xu ; Wei Tu ; Zhao Liu ; Qin-Jun Peng ; Yong Bo ; Da-Fu Cui ; Zu-Yan Xu
Author_Institution :
Univ. of Chinese Acad. of Sci., Beijing, China
Abstract :
We report on a high energy, high peak power 1342-nm Nd:YVO4 picosecond (ps) regenerative amplifier under 880-nm laser-diode (LD) in-band pumping operating from 1 to 10 kHz. The maximum average output power of 1.62 W was obtained with the repetition rate of 10 kHz and the pulse width of 44.9 ps. The corresponding pulse energy and the peak power were up to 0.162 mJ and 3.61 MW with a total optical gain as high as 6.5 × 105. The laser beam quality factor of M2 was measured to be 1.75 at the full output power. The maximum pulse energy of 0.243 mJ and the maximum peak power of 5.55 MW were obtained at 1 kHz, resulting in its total optical gain of 9.7 × 105. This is the highest pulse energy and the highest peak power for LD-pumped high-beam-quality 1342-nm ps lasers with kilohertz repetition rate reported to date.
Keywords :
Q-factor; high-speed optical techniques; laser beams; neodymium; optical pumping; solid lasers; yttrium compounds; LD-pumped high-beam-quality lasers; YVO4:Nd; energy 0.243 mJ; frequency 1 kHz to 10 kHz; high energy high peak power picosecond regenerative amplifier; kilohertz repetition rate; laser beam quality factor; laser-diode in-band pumping; optical gain; output power; power 1.62 W; pulse energy; pulse width; time 44.9 ps; wavelength 1342 nm; wavelength 880 nm; Crystals; Frequency conversion; Laser excitation; Optical amplifiers; Optical pulses; Power amplifiers; Power generation; 1342 nm; High energy; high energy; high peak power; picosecond; regenerative amplifier;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2015.2461133
