The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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Having said that, so that you can process the crystal is incredibly State-of-the-art manufacturing approaches are expected. Because the dawn of this crystal, engaged on this challenge, we are actually the only firm on the globe which can be processed In this particular crystal.
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We summarized the current progress position on the higher-energy DUV laser equally in the wavelength of FHG on the one-μm laser and at 193 nm. The new improvement from the solid-condition/fiber laser, in addition to the nonlinear optical crystals, prompts not simply the normal energy and also the beam high quality (coherence) on the DUV lasers to an unparalleled amount.
As an illustration, The present concave OC could be replaced by a plane mirror which could mitigate the facility density within the surface area of M1 as well as the diamond. Moreover, using substantial harm threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser with the 2nd Stokes wavelength might be superior adequate, along with its good beam good quality, to deliver the final DUV laser at 193 nm by using a large ordinary electrical power.
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Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.
On the opposite aspect, the power scaling on the NIR laser is an additional element to increase the ordinary electric power in the 193-nm DUV laser. As a result of not enough the substantial-energy amplification Alternative on the NIR laser (one example is at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) could be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength in addition to acquiring relative higher ability [21]. Not too long ago, a diamond Raman laser confirmed its ability in attaining a significant ability along with a large conversion effectiveness for the 1st Stokes of the 1-μm laser [22,23], which implies the chance to be used in the 193-nm DUV laser technology because of its superior Raman attain and huge frequency shift.
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The heart beat duration of the 2nd Stokes gentle was shortened to website 5 ns as demonstrated in Figure 7a, just one-shot picture through the oscilloscope, which is a typical phenomenon in Raman laser [forty four] although the heart beat duration with the pump laser was ten ns.
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The beam profile revealed in Determine 7b demonstrated a superb beam high-quality as one of many deserves of Raman laser, which would be useful to crank out a 193-nm DUV laser with a top quality beam.
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