CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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The standard electric power on the NIR laser nevertheless has the possible to generally be improved to tens of watts like 70 W [26] When the double-go configuration might be used with the Yb:YAG SCF amplifier stage. As a result, In case the conversion efficiency of 31% from NIR to DUV may very well be nonetheless managed at this larger ability situation, the normal output energy on the DUV laser at 258 nm could be over twenty W, which might certainly be a remarkable ability amount for the DUV laser and lead to the unanticipated DUV laser machining outcomes. In addition, for prime-electricity DUV laser, the UV hurt on the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is another significant parameter for lasting and stable operation.
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Mainly because of the thermal lens influence in the stable-state lasers, if the heating administration is insufficient, it is not uncomplicated to obtain the good-state laser which has a substantial electrical power in addition to a large beam quality at the same time. Not too long ago, with the development of The skinny disk laser and single-crystal fiber (SCF) laser, a substantial-ability laser at the fundamental wavelength (1 μm) had been recognized with a very good beam quality Despite a TEM00 mode beam [four,24], which would be very good candidates for the fundamental of your DUV laser generation. One more applicant for the basic is definitely the significant-electric power fiber laser which might be attained by coherent beam combination with M2 price less than one.
On the other side, the ability scaling of your NIR laser is an additional facet to boost the regular electricity from the 193-nm DUV laser. As a result of deficiency of the substantial-electrical power amplification Answer of your NIR laser (by way of example at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) might be placed on establish a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with obtaining relative better electricity [21]. A short while ago, a diamond Raman laser showed its means in accomplishing a higher energy in addition to a higher conversion effectiveness within the 1st Stokes from the 1-μm laser [22,23], which implies the likelihood to get used in the 193-nm DUV laser technology thanks to its high Raman gain and huge frequency shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics on the Nd:YAG elementary laser wavelength. As a way to boost the injury threshold, reduced CLBO floor roughness, by ultra-precision machining, is required. Since the CLBO crystal has easy hydroscopic reaction and micro scratches in machining, extremely-specific machining in the CLBO crystal more info is a tricky technological trouble.
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Its UV absorption edge reaches 180 nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals could be grown within the stoichiometric melt with reduce viscosity.
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