CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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Nonetheless, as a way to method the crystal is extremely Superior manufacturing procedures are expected. For the reason that dawn of this crystal, working on this obstacle, we are now the sole firm on the planet which might be processed in this crystal.
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We summarized the current enhancement standing of your significant-electrical power DUV laser both at the wavelength of FHG on the one-μm laser and at 193 nm. The latest development of your reliable-point out/fiber laser, together with the nonlinear optical crystals, prompts not merely the average electricity but additionally the beam excellent (coherence) from the DUV lasers to an unprecedented degree.
The normal electric power with the NIR laser still has the probable to get improved to tens of watts which include 70 W [26] If your double-pass configuration can be utilized with the Yb:YAG SCF amplifier stage. As a result, In case the conversion performance of 31% from NIR to DUV might be nonetheless taken care of at this better ability condition, the standard output electrical power of your DUV laser at 258 nm may be more than 20 W, which might certainly be a impressive electric power amount with the DUV laser and lead to the unanticipated DUV laser machining outcomes. In addition, for prime-electrical power DUV laser, the UV injury on the nonlinear crystal, such as the Home windows for CLBO crystal and the mirrors, is another essential parameter for long lasting and stable operation.
Then again, the beam quality of this bigger electrical power DUV laser would turn into even worse as a consequence of additional severe thermal and nonlinear outcomes. Therefore, the frequency conversion procedures should be very carefully meant to mitigate the aforementioned effects. As a result, a substantial-energy DUV laser at the FHG of 1 μm with an excellent beam good quality may very well be received and can be helpful for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
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On the other side, the facility scaling with the NIR laser is an additional element to increase the typical energy of your 193-nm DUV laser. Mainly because of the insufficient the high-ability amplification Resolution from the NIR laser (such as at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could possibly be placed on produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength together with obtaining relative increased power [21]. Just lately, a diamond Raman laser confirmed its capability in accomplishing a higher power plus a substantial conversion effectiveness for the 1st Stokes of your one-μm laser [22,23], which implies the possibility to become applied from the 193-nm DUV laser technology thanks to its superior Raman attain and enormous frequency shift.
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The heart beat duration of the 2nd Stokes mild was shortened to five ns as proven in Determine 7a, just one-shot photograph from your oscilloscope, and that is a common phenomenon in Raman laser [forty four] although the pulse length on the pump laser was ten ns.
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