A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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Nevertheless, in order to system the crystal is incredibly Superior producing methods are demanded. Considering that the dawn of this crystal, engaged on this problem, we at the moment are the one business on the planet which might be processed In this particular crystal.
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We summarized the current development position with the significant-energy DUV laser both of those with the wavelength of FHG from the one-μm laser and at 193 nm. The recent progress from the stable-state/fiber laser, in addition to the nonlinear optical crystals, prompts not only the standard electricity but in addition the beam quality (coherence) on the DUV lasers to an unparalleled level.
The main element problem of ultraviolet coherent mild supply largely concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the situations for frequency transformation, so the growth, dimension, injury resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed A growing number of.
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On another facet, the ability scaling of the NIR laser is an additional element to enhance the regular energy on the 193-nm DUV laser. Because of the insufficient the high-energy amplification solution of your NIR laser (one example is at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may very well be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength along with more info getting relative higher electricity [21]. A short while ago, a diamond Raman laser showed its ability in acquiring a higher electric power and a significant conversion efficiency with the 1st Stokes from the 1-μm laser [22,23], which means the chance to generally be utilized in the 193-nm DUV laser era because of its higher Raman get and large frequency change.
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Within the scientific and industrial applications, the beam high quality with the DUV laser can also be an essential parameter. Especially, the beam quality of the DUV laser radically influences the laser machining final results. The beam quality of your DUV laser is set by that of the elemental laser plus the crystal for your frequency conversion. A short while ago, a substantial-energy DUV laser (>10 W) at 258 nm was claimed by using a beam high quality of M2 < one.5, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would cause a better laser machining consequence in comparison to the past DUV lasers with bigger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. As a way to increase the hurt threshold, very low CLBO floor roughness, by ultra-precision machining, is needed. Because the CLBO crystal has easy hydroscopic response and micro scratches in machining, extremely-precise machining of the CLBO crystal is a difficult complex difficulty.
The beam profile proven in Figure 7b demonstrated a fantastic beam high quality as one of several deserves of Raman laser, which might be beneficial to deliver a 193-nm DUV laser with a high quality beam.
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The event of the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser electricity correctly, a brand new principle of your 193-nm DUV laser generation is presented depending on the diamond Raman laser.