The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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We summarized the current enhancement status on the superior-energy DUV laser both of those with the wavelength of FHG in the one-μm laser and at 193 nm. The latest enhancement in the reliable-state/fiber laser, plus the nonlinear optical crystals, prompts not only the average electrical power but additionally the beam high-quality (coherence) from the DUV lasers to an unprecedented degree.
The true secret trouble of ultraviolet coherent gentle resource mostly focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the ailments for frequency transformation, so The expansion, size, damage resistance, conversion performance and allowable parameter number of nonlinear optical crystal are required more and more.
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The beam profile shown in Figure 7b demonstrated an excellent beam excellent as among the merits of Raman laser, which would be helpful to make a 193-nm DUV laser with a top quality beam.
The conversion efficiency from essential NIR to DUV is from five% to 36% according to the claimed leads to Desk 1. Raising the conversion effectiveness will lessen the load on the look and setup of the elemental laser amplifier in addition to the electric powered electricity use. An excellent beam quality of the basic laser may also add towards the rising of your conversion efficiency along with the suitable ability depth with the NIR and environmentally friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to eco-friendly and green to DUV laser by usage of CLBO crystal are 70% and around fifty%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
The event from the 193-nm laser was demonstrated by levels of SFG. As a way to scale the DUV laser electrical power effectively, a whole new concept on the 193-nm DUV laser technology is presented based upon the diamond Raman laser.