KGW Crystal Can Be Fun For Anyone
KGW Crystal Can Be Fun For Anyone
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Prior do the job showed that the dual-crystal configuration can be employed to compensate for your thermal lensing influence[
When ytterbium-doped laser attain media generally exhibit a small quantum defect, ytterbium-doped tungstates allow for for notably modest values. As an example, a 1030-nm Yb:YAG laser would Usually be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW may be most proficiently pumped around 981 nm.
Sooner or later, an investigation over the spectral achieve curve of Yb:KGW in the primary amplifier will probably be performed underneath cryogenic temperature evolution from 77 K to three hundred K. The Performing temperature will likely be controlled to appreciate broader obtain bandwidth and fewer shift at the central wavelength of the most crucial amplifier.
In its elemental variety, potassium has a silvery grey metallic appearance, but its compounds (for instance potassium hydroxide) tend to be more commonly Utilized in industrial and chemical purposes.
-switched mode. The bandwidth in the orthogonal orientation was clearly Significantly broader. The calculated Fourier completely transform restricted pulse length was as limited as sub-a hundred and sixty fs. Under the configuration exactly where The 2 crystals were being placed in the same orientation, Along with the seed enter, the amplified pulse bandwidth was only 3 nm with 180 μJ energy when it broke the dichroic mirrors.
For tungstates, the ytterbium doping focus can be very large with out considerable quenching since the replaced ions have a really equivalent ion radius, as well as the inter-ion length is relatively large.
Later on, We'll undertake a laser seed which has a broader spectral bandwidth and utilize an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to create total use of your gain bandwidth of our regenerative amplifier.
The black line denotes the configuration with the crystals placed in the exact same orientation, when the crimson line is under the configuration of crystals placed in orthogonal orientation.
Thermal results are substantially smaller in KGW. This along with the superior destruction threshold make the crystal an outstanding applicant for energy scaling. Comparing Ba(NO3)2 and KGW for Raman application Ba(NO3)2 are more effective in case of ns pulses and KGW �?in the event of ps pulses.
We produced a diode-pumped Yb:KGW regenerative amplifier as the entrance conclusion of the kilohertz terawatt laser technique. Broad bandwidth pulses were attained by applying more info twin crystals with different orientations in their 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-one hundred sixty fs pulse amplification. Hence, pulses with energies of around two mJ and length below two hundred fs can be obtained using bigger-top quality dichroic mirrors along with a broader-spectrum laser seed. This regenerative amplifier performs as an excellent pre-amplifier for further more laser amplification.
The scattered photons have another wavelength and Power as opposed to incident photons, which makes a Raman spectrum.
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