排序方式: 共有5条查询结果,搜索用时 15 毫秒
1
1.
2.
33 W quasi-continuous-wave narrow-band sodium D_(2a) laser by sum-frequency generation in LBO 下载免费PDF全文
We demonstrate an all-solid quasi-continuous-wave (QCW) narrow-band source tunable to sodium D2a line at 589.159 nm. The source is based on sum-frequency mixing between lasers at 1064 nm and 1319 nm in a LBO crystal. The 1064 nm and 1319 nm lasers are produced from two diode side-pumped Nd:YAG master oscillator power amplifier (MOPA) laser systems, respectively. A 33 W output of 589 nm laser is obtained with beam quality factor M^2 = 1.25, frequency stability better than ±0.2 GHz and linewidth less than 0.44 GHz. A prototype 589 nm laser system is assembled, and a sodium laser guided star has been successfully observed in the field test. 相似文献
3.
Ways on energy enhancement for single frequency oscillator are reported in this paper. By quantitative analysis on gain and loss coefficients for each cavity mode with inserted etalons, a 37 mJ, 100 Hz high energy single-frequency Nd:YAG oscillator is obtained. The pulse energy is promoted by enhancement of nearly 7 times for a single frequency oscillator reported. The result proves that this method does help for energy enhancement. It has attractive potential for high energy single frequency oscillator design, especially on condition of intensive side pumped or long cavity laser, where strong competitors exist and are hard to be suppressed. 相似文献
4.
High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system 下载免费PDF全文
This paper demonstrated a high power and high beam quality
diode-pumped 1319-nm Nd:YAG master oscillator-power amplifier laser
system. A thermally near-unstable resonator with four-rod
birefringence compensation flat--flat cavity was adopted as the
master oscillator. A solid etalon was inserted in the unidirectional
ring resonator to compress the laser linewidth. Under a repetition
rate of 500~Hz and pulse width of 160~\mus, the master oscillator
delivers an average output power of 16.8~W at 1319~nm with linear
polarisation, beam quality factor M^{2} = 1.16 and linewidth of
3.2~GHz. A double-pass power amplifier with two amplifier stages was
employed for higher power scaling and the output power was amplified
to be 25.9~W with M^{2} = 1.43. 相似文献
5.
Zexin Song 《中国物理 B》2022,31(5):54208-054208
The influence of pumping laser pulse on the property of quasi-continuous-wave (QCW) diode-side-pumped Nd:YAG laser is investigated theoretically and experimentally. Under remaining a fixed duty cycle, the average output power increases, and the corresponding thermal focal length shorten with the increase of the pump pulse duration, which attributes to the decrease of the ratio of pulse buildup time to the pulse duration. At a pump power of 146 W, the laser output power changes from 65.1 W to 81.2 W when the pulse duration is adjusted from 150 μ s to 1000 μ s, confirming a significant enhancement of 24.7%. A laser rate equation model incorporating the amplified spontaneous emission is also utilized and numerically solved, and the simulated results agree well with the experimental data. 相似文献
1