The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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All-stable-point out ultraviolet lasers are extensively Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of little volume, very long everyday living, significant performance, great beam high quality, wide tuning and slender spectral line, and so forth. Utilizing superior electric power around-infrared coherent light resource as the basic frequency resource based upon nonlinear tuning know-how, producing ultraviolet coherent radiation by multistage frequency conversion is considered to be a vital way to produce the ultraviolet coherent light-weight source.
Compared to BBO it characteristics larger sized spectral and temperature acceptance, much better angle tolerance, plus a lesser walk-off angle. from 3289 $ delivery
In accordance with the evidence-of-theory experiment, the conversion effectiveness of 23% implied the potential for achieving high-energy at the second Stokes wavelength in the Raman laser. In case the pump laser of 1078 nm may very well be received at the average ability of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm can be over 10 W. The design of your Raman laser cavity need to be optimized so that you can stay away from the injury with the M1 and diamond floor.
As an illustration, the current concave OC could get replaced by a plane mirror which could mitigate the facility density to the surface area of M1 and the diamond. What's more, employing higher problems threshold coatings for M1 and diamond would also Enhance the output power with no damages. Then, the NIR laser at the 2nd Stokes wavelength can be substantial enough, and also its good beam good quality, to deliver the final DUV laser at 193 nm having a substantial ordinary electrical power.
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On the opposite aspect, the power scaling of your NIR laser is an additional facet to boost the average electric power on the 193-nm DUV laser. As a result of not enough the large-energy amplification Answer with the NIR laser (by way of example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) could be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative larger ability [21]. Lately, a diamond Raman laser showed its potential in acquiring a higher electricity and also a superior conversion efficiency on the 1st Stokes on the 1-μm laser [22,23], which suggests the possibility for being applied within the 193-nm DUV laser generation due to its high Raman get and large frequency shift.
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The heart beat length of the 2nd Stokes mild was shortened to five ns as proven in Determine 7a, an individual-shot picture with the oscilloscope, which can be a standard phenomenon in Raman laser [44] even though the pulse length of your pump laser was ten ns.
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The beam profile demonstrated in Determine 7b shown a very good beam high quality as one of several merits of Raman laser, which would be helpful to create a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals may be developed through the stoichiometric soften with decrease viscosity.
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