The laser damage resistances of four crystals(CaF_(2),MgF_(2),Al_(2)O_(3),and SiO_(2))and fused silica(JGS1)irradiated at 355nm(8 ns,300-on-1)are reported.The laser-induced damage threshold is measured using a tripled...The laser damage resistances of four crystals(CaF_(2),MgF_(2),Al_(2)O_(3),and SiO_(2))and fused silica(JGS1)irradiated at 355nm(8 ns,300-on-1)are reported.The laser-induced damage threshold is measured using a tripled Nd:YAG laser system.The results obtained from the pure crystals are in accordance with their specific optical,mechanical,and thermal properties.An empirical law based on the Franz–Keldysh effect can interpret the experimental results.展开更多
<div style="text-align:justify;"> An intracavity frequency doubling acousto-optically Q-switched Neodymium-doped Yttrium Orthvanadate (Nd:YVO<sub>4</sub>) 457 nm blue laser by employing a t...<div style="text-align:justify;"> An intracavity frequency doubling acousto-optically Q-switched Neodymium-doped Yttrium Orthvanadate (Nd:YVO<sub>4</sub>) 457 nm blue laser by employing a three-mirror folded cavity was demonstrated. With the incident pump power of 40.4 W, the maximum average output power of 439 mW 457 nm laser, and the minimum pulse duration of 86.14 ns and the maximum peak power of 510 W were achieved at 10 kHz. The M<sup>2</sup> factors are 1.23 and 1.61 in X and Y directions, respectively. The power stability in two hours is better than 2%. </div>展开更多
A highly efficient laser system output at the H-13 Fraunhofer line of 486.1 nm has been demonstrated. A high pulse energy single-frequency hybrid 1064 nm master oscillator power amplifier was frequency-tripled to achi...A highly efficient laser system output at the H-13 Fraunhofer line of 486.1 nm has been demonstrated. A high pulse energy single-frequency hybrid 1064 nm master oscillator power amplifier was frequency-tripled to achieve 355 nm laser pulses, which acted as the pmnp source of the beta barium borate nanosecond pulse optical para- metric oscillator. With pump energy of 190 mJ, the laser system generated a maximum output of 62 mJ blue laser pulses at 486.1 nm, corresponding to conversion efficiency of 32.6%. The laser spectrum width was measured to be around 0.1 ran, being in conformity with the spectrum width of the solar Fraunhofer line.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 11104293.
文摘The laser damage resistances of four crystals(CaF_(2),MgF_(2),Al_(2)O_(3),and SiO_(2))and fused silica(JGS1)irradiated at 355nm(8 ns,300-on-1)are reported.The laser-induced damage threshold is measured using a tripled Nd:YAG laser system.The results obtained from the pure crystals are in accordance with their specific optical,mechanical,and thermal properties.An empirical law based on the Franz–Keldysh effect can interpret the experimental results.
文摘<div style="text-align:justify;"> An intracavity frequency doubling acousto-optically Q-switched Neodymium-doped Yttrium Orthvanadate (Nd:YVO<sub>4</sub>) 457 nm blue laser by employing a three-mirror folded cavity was demonstrated. With the incident pump power of 40.4 W, the maximum average output power of 439 mW 457 nm laser, and the minimum pulse duration of 86.14 ns and the maximum peak power of 510 W were achieved at 10 kHz. The M<sup>2</sup> factors are 1.23 and 1.61 in X and Y directions, respectively. The power stability in two hours is better than 2%. </div>
基金supported by the National Key Research and Development Program of China(No.2016YFC1400902)the National Key Scientific Instrument and Equipment Development Project(No.2013YQ120343)+1 种基金the Scientific Innovation Fund of Chinese Academy of Sciences(No.CXJJ-16S014)the Development Program of China(No.2014AA093301)
文摘A highly efficient laser system output at the H-13 Fraunhofer line of 486.1 nm has been demonstrated. A high pulse energy single-frequency hybrid 1064 nm master oscillator power amplifier was frequency-tripled to achieve 355 nm laser pulses, which acted as the pmnp source of the beta barium borate nanosecond pulse optical para- metric oscillator. With pump energy of 190 mJ, the laser system generated a maximum output of 62 mJ blue laser pulses at 486.1 nm, corresponding to conversion efficiency of 32.6%. The laser spectrum width was measured to be around 0.1 ran, being in conformity with the spectrum width of the solar Fraunhofer line.
