CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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All-sound-state ultraviolet lasers are actually commonly used in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of tiny quantity, extended lifestyle, higher performance, very good beam quality, huge tuning and slender spectral line, and so on. Employing superior electric power close to-infrared coherent gentle source as the basic frequency resource depending on nonlinear tuning engineering, building ultraviolet coherent radiation by multistage frequency conversion is regarded as a very important method to build the ultraviolet coherent mild supply.
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According to the evidence-of-basic principle experiment, the conversion effectiveness of 23% implied the possibility of accomplishing substantial-electric power at the second Stokes wavelength of your Raman laser. Should the pump laser of 1078 nm can be attained at the common electrical power of fifty W, the output ability of its 2nd Stokes wavelength at 1512 nm may very well be much more than ten W. The design of your Raman laser cavity should be optimized to be able to avoid the injury of the M1 and diamond area.
For example, the current concave OC could get replaced by a plane mirror which could mitigate the power density over the floor of M1 as well as the diamond. Moreover, applying significant damage threshold coatings for M1 and diamond would also improve the output power without any damages. Then, the NIR laser at the 2nd Stokes wavelength may very well be large enough, together with its excellent beam good quality, to generate the final DUV laser at 193 nm with a substantial average electric power.
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Due to thermal lens outcome during read more the solid-point out lasers, If your heating administration is inadequate, It's not necessarily quick to acquire the good-point out laser which has a significant power and a higher beam high-quality concurrently. A short while ago, with the event of The skinny disk laser and solitary-crystal fiber (SCF) laser, a higher-electric power laser at the elemental wavelength (one μm) were recognized with a great beam good quality Despite a TEM00 manner beam [four,24], which might be excellent candidates for the fundamental of your DUV laser technology. One more applicant for the basic is definitely the higher-ability fiber laser which could be reached by coherent beam blend with M2 price under one.
On the other aspect, the facility scaling from the NIR laser is another facet to increase the normal electrical power with the 193-nm DUV laser. Because of the lack of the substantial-electrical power amplification Resolution in the NIR laser (such as at 1553 nm), nonlinear frequency procedures for instance optical parameter oscillation (OPO) could be placed on establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength as well as getting relative higher electrical power [21]. Not long ago, a diamond Raman laser confirmed its ability in achieving a superior electricity and a substantial conversion efficiency in the 1st Stokes in the 1-μm laser [22,23], which implies the likelihood for being used in the 193-nm DUV laser generation due to its substantial Raman obtain and large frequency change.
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The event from the 193-nm laser was demonstrated by phases of SFG. In order to scale the DUV laser energy properly, a completely new idea on the 193-nm DUV laser technology is introduced based on the diamond Raman laser.