CLBO Crystal Secrets
CLBO Crystal Secrets
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We summarized The existing development standing with the substantial-electricity DUV laser the two within the wavelength of FHG on the one-μm laser and at 193 nm. The recent development with the strong-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the average electricity but will also the beam high quality (coherence) on the DUV lasers to an unprecedented stage.
The key dilemma of ultraviolet coherent light-weight resource primarily focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the conditions for frequency transformation, so The expansion, sizing, injury resistance, conversion effectiveness and allowable parameter variety of nonlinear optical crystal are essential Progressively more.
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On the opposite facet, the power scaling of the NIR laser is yet another part to boost the normal electrical power of your 193-nm DUV laser. A result of the not enough the higher-ability amplification Remedy with the NIR laser (for example at 1553 nm), nonlinear frequency processes like optical parameter oscillation (OPO) may very well be placed on create a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as obtaining relative increased electric power [21]. Not long ago, a diamond Raman laser confirmed its ability in attaining a large electrical power as well as a large conversion efficiency in the 1st Stokes of the one-μm laser [22,23], which suggests the likelihood for being applied in the 193-nm DUV laser generation due to its high Raman attain and huge frequency change.
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Tunable ultraviolet laser source based on solid-point out dye laser know-how and CsLiB6O10 harmonic technology
The conversion efficiency from essential NIR to DUV is from 5% to 36% based on the reported ends in Desk 1. Rising the conversion efficiency will reduce the load on the design and setup of the elemental laser amplifier in addition to the electric powered power usage. A fantastic beam good quality of the fundamental laser will even lead on the raising with the conversion effectiveness as well as the appropriate energy intensity from the NIR and green laser within the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by utilization of CLBO crystal are 70% and about fifty%, respectively [12], which corresponds towards the conversion effectiveness of 35% from fundamental to DUV.
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