5 Tips about CLBO Crystal You Can Use Today

All-sound-state ultraviolet lasers are actually commonly used in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of small quantity, extended lifestyle, superior effectiveness, good beam excellent, broad tuning and narrow spectral line, etcetera. Using superior electricity near-infrared coherent mild resource as the fundamental frequency source according to nonlinear tuning technological know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered a very important approach to acquire the ultraviolet coherent light-weight source.

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The common ability in the NIR laser however has the probable to become improved to tens of watts including 70 W [26] In case the double-move configuration might be utilized for your Yb:YAG SCF amplifier stage. That's why, In the event the conversion efficiency of 31% from NIR to DUV can be continue to maintained at this greater electrical power issue, the normal output electric power with the DUV laser at 258 nm can be more than 20 W, which might certainly be a remarkable ability amount for that DUV laser and bring on the unanticipated DUV laser machining success. Also, for prime-electrical power DUV laser, the UV injury from the nonlinear crystal, including the Home windows for CLBO crystal plus the mirrors, is an additional critical parameter for long-term click here and stable Procedure.

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The two the 1040 nm and 1078 nm laser come from one twin-wavelength Yb-doped fiber laser. Every single laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.

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Inside the scientific and industrial apps, the beam high-quality of the DUV laser is additionally a vital parameter. Specially, the beam high-quality of your DUV laser significantly affects the laser machining outcomes. The beam top quality in the DUV laser is set by that of the fundamental laser and also the crystal for your frequency conversion. Not too long ago, a large-electrical power DUV laser (>10 W) at 258 nm was reported with a beam top quality of M2 < 1.five, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a far better laser machining final result as compared to the past DUV lasers with much larger M2.

The heart beat length of the 2nd Stokes light was shortened to five ns as revealed in Figure 7a, only one-shot picture with the oscilloscope, that is a typical phenomenon in Raman laser [forty four] although the heart beat duration in the pump laser was ten ns.

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The beam profile proven in Determine 7b shown a great beam quality as among the list of merits of Raman laser, which might be useful to produce a 193-nm DUV laser with a top quality beam.

The conversion effectiveness from elementary NIR to DUV is from five% to 36% according to the documented ends in Desk one. Growing the conversion effectiveness will decrease the stress on the look and set up of the fundamental laser amplifier in addition to the electrical ability use. A great beam top quality of the basic laser can even add into the increasing from the conversion efficiency in addition to the suitable electrical power intensity in the NIR and eco-friendly laser while in the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from elementary to DUV.

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