Indicators on KGW Crystal You Should Know
Indicators on KGW Crystal You Should Know
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]. Mainly because of the brief storage time, Ti:sapphire is usually pumped by frequency-doubled Nd:YAG or Nd:glass good-point out lasers, which leads to a cumbersome and sophisticated method with large Value. When compared with typical CPA laser devices, the OPCPA method can obtain a shorter pulse length and a higher peak power.
While ytterbium-doped laser attain media frequently exhibit a small quantum defect, ytterbium-doped tungstates allow for for especially smaller values. By way of example, a 1030-nm Yb:YAG laser would Usually be pumped all around 940 nm, Whilst Yb:KGW or Yb:KYW might be most effectively pumped about 981 nm.
For a few applications, tungstates supply a combination of different beneficial properties. Specifically for passive method locking, ytterbium-doped double tungstates tend to be superior to other media concerning The mixture of substantial get bandwidth, massive cross-sections, and relatively excellent thermal Attributes �?Although in Just about every specific self-discipline better materials may very well be uncovered.
Figure seven demonstrates the calculated dispersion payment outcome. The compressed pulse length is all over 185 fs when the length of input pulses is 150 fs. The discrepancy among them will be considerably minimized with an extended pulse input due to the fact uncompensated significant-order dispersion matters a lot less for longer pulses. This configuration was used to exhibit the compressibility of our amplified pulses in the preliminary phase of our total method. In the future we'd undertake a grating-pair compressor for great payment for prime-buy dispersion.
The datasets made use of and/or analysed throughout the current analyze available in the corresponding author on reasonable request.
Amplified pulses with an Strength earlier mentioned 2.5 mJ is often predicted by implementing the next pump energy on the regenerative amplifier and which makes it do the job for the saturation stage. The laser fluence of ~1 J/cm2 within the dichroic mirrors is believed being down below the problems threshold of large-high-quality dielectric-coated mirrors.
Numerous approaches are adopted to resolve this problem. An acousto-optical programmable dispersive filter can be utilized to modulate the seed’s spectrum to suppress the acquire-narrowing outcome[
Comparison of spectral Electricity densities of supercontinua generated while in the ailments of exceptional pumping within the investigated resources.
The actual spectra have been reconstructed by correcting the measured spectra with the account for the filter transmission capabilities and with the sensitivity capabilities with the spectrometers at the information submit-processing phase. The spectral dynamics in Every single sample was calculated by wonderful tuning the pump pulse energy with a pc-managed attenuator which was integrated inside the laser method. Thermal Electrical power meter EM (Ophir 3A-PF-12) was utilized to measure the SC energy which was thereafter accustomed to work out the spectral Power density with the SC radiation. All the measurements have been done with none translation of your sample with regard to your pump beam.
We created a diode-pumped Yb:KGW regenerative amplifier as being the entrance stop with the kilohertz terawatt laser technique. Broad bandwidth pulses had been attained by applying twin crystals with unique orientations in their get more info optical axes[
相关工作得到了上海扬帆计划、国家重点研发计划、中国科学院战略性先导科技专项、国家自然科学基金项目、上海市优秀学术/技术带头人计划、上海市市级科技重大专项、中国科学院青年创新促进会的支持。（强场激光物理国家重点实验室供稿）
-switched output spectrum from the regenerative amplifier supports a sub-160 fs pulse amplification. Consequently, pulses with energies of around 2 mJ and duration below 200 fs is usually attained applying larger-excellent dichroic mirrors as well as a broader-spectrum laser seed. This regenerative amplifier works as a very good pre-amplifier for even further laser amplification.
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