The best Side of CLBO Crystal
The best Side of CLBO Crystal
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We summarized The existing advancement status with the higher-electrical power DUV laser both of those on the wavelength of FHG of the 1-μm laser and at 193 nm. The latest enhancement of the stable-state/fiber laser, as well as the nonlinear optical crystals, prompts not simply the average electrical power but in addition the beam high-quality (coherence) of the DUV lasers to an unparalleled amount.
The common power in the NIR laser nonetheless has the potential being improved to tens of watts including 70 W [26] In case the double-pass configuration can be used for that Yb:YAG SCF amplifier phase. As a result, In the event the conversion performance of 31% from NIR to DUV might be nonetheless preserved at this bigger electric power problem, the common output electric power of your DUV laser at 258 nm may very well be more than 20 W, which would become a outstanding energy degree for that DUV laser and bring on the unanticipated DUV laser machining success. Furthermore, for prime-electrical power DUV laser, the UV injury on the nonlinear crystal, such as the Home windows for CLBO crystal as well as mirrors, is an additional crucial parameter for long-term and steady operation.
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Each the 1040 nm and 1078 nm laser come from one particular twin-wavelength Yb-doped fiber laser. Every laser is amplified by levels of fiber amplifier and Yb-doped materials amplifier, respectively.
On the other side, the ability scaling of your NIR laser is another facet to raise the normal ability of the 193-nm DUV laser. As a result of deficiency of the superior-power amplification solution of your NIR laser (such as at 1553 nm), nonlinear frequency procedures such as optical parameter oscillation (OPO) could be placed on produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and acquiring relative increased energy [21]. Just lately, a diamond Raman laser showed its capacity in achieving a superior electric power as well as a superior conversion performance in the 1st Stokes of your 1-μm laser [22,23], which means the likelihood for being utilized in the 193-nm DUV laser generation because of its higher Raman get and large frequency shift.
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During the scientific and industrial purposes, the beam quality in the DUV laser is additionally a crucial parameter. Specifically, the beam top quality from the DUV laser radically influences the laser machining benefits. The beam top quality of the DUV laser is decided by that of the fundamental laser as well as crystal for that frequency conversion. Not too long ago, a high-electricity DUV laser (>10 W) at 258 nm was documented with a beam good quality of M2 < one.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would cause a greater laser machining consequence when compared with the previous DUV lasers with much larger M2.
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Tunable ultraviolet laser resource dependant on strong-state dye laser technological innovation and CsLiB6O10 harmonic era
Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as substantial as that of KDP. CLBO crystals might be grown within the stoichiometric melt with decrease viscosity.
The development in the 193-nm laser was shown by levels of SFG. In order to scale the DUV laser electricity correctly, a brand new notion with the 193-nm DUV laser technology is offered based upon the diamond Raman laser.