CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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The important thing problem of ultraviolet coherent light-weight source largely concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is without doubt one of the ailments for frequency transformation, so the growth, dimensions, harm resistance, conversion efficiency and allowable parameter array of nonlinear optical crystal are essential A growing number of.
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Due to thermal lens influence from the strong-point out lasers, If your heating administration is inadequate, It's not necessarily simple to obtain the solid-state laser which has a superior ability along with a large beam top quality simultaneously. Not too long ago, with the development of the thin disk laser and one-crystal fiber (SCF) laser, a superior-ability laser at the elemental wavelength (1 μm) had been realized with a good beam top quality In spite of a TEM00 manner beam [four,24], which would be great candidates for the fundamental of your DUV laser era. Yet another candidate for the elemental would be the large-energy fiber laser which could be obtained by coherent beam blend with M2 value fewer than 1.
On the other facet, the power scaling CLBO Crystal of your NIR laser is an additional element to enhance the regular energy in the 193-nm DUV laser. A result of the lack of the high-electricity amplification Answer of your NIR laser (one example is at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) could be placed on build a wavelength converter by shifting the wavelength from one μm to the desired wavelength and also getting relative greater electric power [21]. Lately, a diamond Raman laser showed its means in reaching a significant power as well as a significant conversion performance for the 1st Stokes in the one-μm laser [22,23], which means the chance to be applied while in the 193-nm DUV laser technology thanks to its high Raman obtain and huge frequency change.
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While in the scientific and industrial programs, the beam excellent of the DUV laser is also a crucial parameter. Particularly, the beam top quality of the DUV laser substantially influences the laser machining final results. The beam high-quality of the DUV laser is set by that of the fundamental laser as well as the crystal for the frequency conversion. Just lately, a superior-electric power DUV laser (>10 W) at 258 nm was claimed which has a beam high quality of M2 < 1.five, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would result in an even better laser machining consequence when compared to the former DUV lasers with more substantial M2.
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The beam profile proven in Determine 7b demonstrated a good beam high-quality as one of several merits of Raman laser, which might be advantageous to deliver a 193-nm DUV laser with a high quality beam.
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