The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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All-solid-condition ultraviolet lasers are greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of little quantity, extensive life, high effectiveness, excellent beam high quality, wide tuning and slender spectral line, and so forth. Utilizing significant electricity close to-infrared coherent light-weight resource as the basic frequency source according to nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is considered to be an essential solution to build the ultraviolet coherent light-weight supply.
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The typical electrical power in the NIR laser even now has the likely for being improved to tens of watts such as 70 W [26] In the event the double-go configuration may very well be utilized with the Yb:YAG SCF amplifier stage. Hence, If your conversion efficiency of 31% from NIR to DUV may very well be nevertheless managed at this bigger electricity condition, the common output electricity of the DUV laser at 258 nm may be a lot more than twenty W, which would be described as a outstanding electricity stage for the DUV laser and cause the unanticipated DUV laser machining success. Moreover, for high-energy DUV laser, the UV injury with the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is an additional crucial parameter for long-term and stable Procedure.
Alternatively, the beam excellent of the greater electricity DUV laser would develop into even worse as a consequence of more significant thermal and nonlinear outcomes. Therefore, the frequency conversion processes should be carefully intended to mitigate the aforementioned outcomes. As a result, a significant-power DUV laser at the FHG of one μm with a fantastic beam quality might be acquired and will be useful for obtaining the shorter wavelength DUV lasers for example 193 nm by SFG.
Both of those the 1040 nm and 1078 nm laser originate from one twin-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
On one other facet, the ability scaling in the NIR laser is another aspect to increase the ordinary electric power with the 193-nm DUV laser. A result of the lack of the significant-electricity amplification Answer of your NIR laser (by way of example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) might be placed on create a wavelength converter by shifting the wavelength from one μm to the specified wavelength along with getting relative larger power [21]. Not long ago, a diamond Raman laser showed its potential in obtaining a higher electricity in addition to a higher conversion efficiency on the 1st Stokes with the one-μm laser [22,23], which means the chance to be applied in the 193-nm DUV read more laser generation as a consequence of its significant Raman attain and enormous frequency change.
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Furthermore, combining the stable-state laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers could possibly be realized at new wavelengths with higher electricity and superior beam high quality, which was examined with the proof-of-principle experiment. This Raman laser plan provides a fresh path to the superior-energy DUV laser, Specifically for the wavelength of 193 nm.
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The event from the 193-nm laser was shown by stages of SFG. So that you can scale the DUV laser electricity correctly, a whole new thought in the 193-nm DUV laser technology is introduced depending on the diamond Raman laser.