The smart Trick of KGW Crystal That No One is Discussing
The smart Trick of KGW Crystal That No One is Discussing
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Past do the job showed that the dual-crystal configuration may be used to compensate for the thermal lensing effect[
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In its elemental sort, potassium features a silvery grey metallic physical appearance, but its compounds (for example potassium hydroxide) tend to be more regularly Utilized in industrial and chemical purposes.
The monoclinic crystal constructions results in a pure birefringence, assisting to keep away from thermally induced polarization rotation and depolarization loss.
For tungstates, the ytterbium doping focus can be extremely substantial without the need of sizeable quenching as the replaced ions have a really equivalent ion radius, along with the inter-ion distance is comparatively huge.
In the future, We'll adopt a laser seed which has a broader spectral bandwidth and apply an acousto-optical programmable dispersive filter to modulate the seed’s spectrum to generate comprehensive use of the obtain bandwidth of our regenerative amplifier.
KGW (potassium gadolinium tungstate) is actually a crystal that is often applied as being a Raman crystal in Raman spectroscopy. This is a colorless, clear crystal that includes a superior Raman scattering performance and a powerful Raman spectrum, rendering it appropriate for A selection of Raman apps.
So, with an additional advancement within our regenerative amplifier, two mJ compressed pulses might be expected, devoid of damaging any part inside our compressor.
The 2-pump laser could give up to 120 W electrical power. About sixty% of the most pump ability was used inside our experiment considering the lower efficiency on the dichroic mirrors. Under this dual-crystal configuration, our cavity supports a one hundred W pump ability input, as talked over in Segment two.2. High-high quality dichroic mirrors will be utilized Sooner or later, and laser pulses will probably be stretched to an extended pulse period.
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）
A multi-go major amplifier will further more Increase the Electricity to above 40 mJ. We will use cryogenically cooled Yb:KGW technology to restrain the thermal outcome. Two stages of compression might be used following amplification. The 1st phase requires a typical Treacy-form compressor, and will compress the pulse period to underneath 300 fs using an efficiency of approximately 70%. The 2nd phase entails a gas-filled multi-pass mobile[
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]. The twin-crystal configuration lowers the thermal load on Each and every crystal when sustaining a significant gain, and facilitates the compensation of each’s thermal lensing outcome. Consequently, the laser cavity can get the job done with a large balance selection around the thermal lensing impact variation.