The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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We employed a transmission grating (TG) for a dispersive element within our stretcher and compressor. A compact configuration was adopted, the place the stretcher plus the compressor shared a person grating similar to that in Ref.
Besides its use as a Raman crystal, KGW can be Employed in other optical apps, for example in laser programs and to be a scintillator in clinical imaging.
The monoclinic crystal buildings brings about a purely natural birefringence, helping to avoid thermally induced polarization rotation and depolarization loss.
Amplified pulses with an Power over two.five mJ may be envisioned by applying a greater pump electricity for the regenerative amplifier and which makes it get the job done with the saturation amount. The laser fluence of ~one J/cm2 on the dichroic mirrors is considered to be below the problems threshold of high-top quality dielectric-coated mirrors.
Various techniques are already adopted to solve this problem. An acousto-optical programmable dispersive filter may be utilized to modulate the seed’s spectrum to suppress the gain-narrowing outcome[
Comparison of spectral energy densities of supercontinua generated inside the ailments of optimum pumping while in the investigated supplies.
We prepare to boost the heart click here beat Strength to previously mentioned forty mJ in two-stage multi-move amplifiers, similar to a obtain aspect of 20. In Each and every amplifier, we may also undertake two cascaded crystals placed underneath orthogonal orientation to decrease the thermal load on Every single crystal and compensate for the achieve-narrowing effect.
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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）
Tungstates tend to possess superior Raman coefficients (�?Raman scattering). Therefore, they will generate considerable Raman get at reasonable optical intensities. It is achievable to use the laser crystal alone like a Raman converter.
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KGW crystals are used as Raman scattering supplies simply because they have strong Raman scattering at a quantity of various wavelengths. Every time a laser beam is directed on to the crystal, the photons while in the laser beam communicate with the crystal lattice, triggering several of the photons to scatter in a distinct direction.