Not known Factual Statements About CLBO Crystal
Not known Factual Statements About CLBO Crystal
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We summarized the current growth position from the high-ability DUV laser equally within the wavelength of FHG of your one-μm laser and at 193 nm. The modern progress on the good-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the typical power but in addition the beam high quality (coherence) on the DUV lasers to an unparalleled degree.
The common electricity from the NIR laser continue to has the likely to generally be enhanced to tens of watts for example 70 W [26] If your double-pass configuration may be used with the Yb:YAG SCF amplifier phase. Consequently, In case the conversion performance of 31% from NIR to DUV may very well be even now taken care of at this better electric power condition, the standard output electric power in the DUV laser at 258 nm might be in excess of twenty W, which might be a exceptional electric power amount with the DUV laser and lead to the unanticipated DUV laser machining outcomes. Furthermore, for prime-energy DUV laser, the UV destruction of your nonlinear crystal, including the windows for CLBO crystal as well as the mirrors, is another essential parameter for long-term and secure Procedure.
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On the other facet, the facility scaling on the NIR laser is an additional element to enhance the normal electrical power from the 193-nm DUV laser. Because of the not enough the large-power amplification Option in the NIR laser (such as at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) may very well be applied to develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength along with acquiring relative bigger energy [21]. Not long ago, a diamond Raman laser confirmed its ability in attaining a significant electricity along with a substantial conversion effectiveness for the 1st Stokes of your one-μm laser [22,23], which means the chance being used from the 193-nm DUV laser generation due to its higher Raman gain and enormous frequency change.
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Tunable ultraviolet laser source based upon stable-point out dye laser technological know-how and CsLiB6O10 harmonic technology
The conversion performance from basic NIR to DUV is from five% to 36% according to the claimed leads to Desk 1. Rising the conversion efficiency will decrease the stress on the look and setup of the basic laser amplifier as well as the electrical ability usage. A very good beam top quality of the elemental laser will also contribute on the raising of the conversion efficiency along with the appropriate electricity intensity on the NIR and inexperienced laser from the SHG and FHG system, respectively. The best conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by utilization of CLBO crystal are 70% and all around 50%, respectively [12], which corresponds to the conversion performance of 35% from elementary to DUV.
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