Even so, as a way to procedure the crystal is very Sophisticated producing approaches are essential. Since the dawn of this crystal, engaged on this challenge, we at the moment are the sole business on this planet that can be processed On this crystal.
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We summarized The present advancement position in the significant-electrical power DUV laser the two at the wavelength of FHG with the 1-μm laser and at 193 nm. The new advancement of your sound-point out/fiber laser, in addition to the nonlinear optical crystals, prompts not simply the standard power but will also the beam high-quality (coherence) in the DUV lasers to an unprecedented amount.
The standard ability on the NIR laser still has the potential to be enhanced to tens of watts for instance 70 W [26] In the event the double-move configuration might be utilized to the Yb:YAG SCF amplifier stage. Therefore, In the event the conversion efficiency of 31% from NIR to DUV may very well be nevertheless maintained at this larger ability problem, the standard output energy of your DUV laser at 258 nm could possibly be much more than twenty W, which would be considered a amazing ability level to the DUV laser and bring on the unanticipated DUV laser machining outcomes. What's more, for top-electrical power DUV laser, the UV problems of your nonlinear crystal, such as the Home windows for CLBO crystal and also the mirrors, is an additional critical parameter for long run and steady operation.
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LBO is usually a superb nonlinear crystal which is often applied to the SHG from your NIR on the environmentally friendly. The DUV laser is normally recognized by two stages of SFG inside the LBO crystals since there is absolutely no period-matching angle for LBO to transform the green laser at 515 nm or 532 nm towards the DUV right by SHG [sixteen]. Lately, the NSBBF crystal has also demonstrated its opportunity to obtain a significant conversion effectiveness from 532 nm to 266 nm. The walk-off angle and deff of the NSBBF are almost comparable to All those of CLBO [17].
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Its UV absorption edge reaches 180 nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals might be grown from the stoichiometric soften with reduced viscosity.
The development of the 193-nm laser was demonstrated by levels of SFG. In an effort to scale the DUV laser energy proficiently, a fresh thought from the 193-nm DUV laser technology is presented determined by the diamond Raman laser.