A Secret Weapon For CLBO Crystal
A Secret Weapon For CLBO Crystal
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Nevertheless, as a way to procedure the crystal may be very State-of-the-art production strategies are required. For the reason that dawn of this crystal, engaged on this challenge, we at the moment are the sole business in the world that can be processed On this crystal.
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According to the evidence-of-basic principle experiment, the conversion efficiency of 23% implied the potential for achieving significant-energy at the next Stokes wavelength with the Raman laser. If your pump laser of 1078 nm can be attained at the standard ability of fifty W, the output electric power of its 2nd Stokes wavelength at 1512 nm may be much more than ten W. The design of the Raman laser cavity ought to be optimized so that you can steer clear of the problems with the M1 and diamond floor.
The important thing difficulty of ultraviolet coherent gentle resource mostly focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is among the circumstances for frequency transformation, so The expansion, sizing, problems resistance, conversion effectiveness and allowable parameter array of nonlinear optical crystal are required more and more.
Alternatively, the beam good quality of this better electrical power DUV laser would become worse due to much more really serious thermal and nonlinear consequences. Therefore, the frequency conversion processes must be diligently built to mitigate the aforementioned effects. Therefore, a large-electricity DUV laser for the FHG of one μm with a great beam high quality could possibly be received and can be helpful for getting the shorter wavelength DUV lasers such as 193 nm by SFG.
As a result of thermal lens result during the reliable-state lasers, When the heating administration is insufficient, it is not uncomplicated to get the strong-condition laser using a high ability in addition to a large beam good quality concurrently. Just lately, with the event of the thin disk laser and solitary-crystal fiber (SCF) laser, a substantial-electric power laser at the elemental wavelength (1 μm) had been realized with a great beam high quality even with a TEM00 manner beam [4,24], which might be very good candidates for the basic of the DUV laser technology. A different applicant for the basic may be the large-electrical power fiber laser which might be accomplished by coherent beam mix with M2 price a lot less than 1.
On the other aspect, the power scaling with the NIR laser is another component to raise the average electricity of the 193-nm DUV laser. Due to lack of the large-ability amplification Answer from the NIR laser (as an example at 1553 nm), nonlinear frequency procedures which include optical parameter oscillation (OPO) may read more very well be applied to develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength and obtaining relative greater electricity [21]. A short while ago, a diamond Raman laser confirmed its means in reaching a significant ability as well as a substantial conversion effectiveness in the 1st Stokes of the one-μm laser [22,23], which suggests the possibility to generally be utilized inside the 193-nm DUV laser technology as a consequence of its substantial Raman acquire and enormous frequency change.
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The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the claimed ends in Table one. Growing the conversion performance will reduce the burden on the design and set up of the basic laser amplifier as well as the electrical energy intake. A great beam high-quality of the fundamental laser can even add for the rising of your conversion efficiency along with the right ability depth of the NIR and green laser inside the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to inexperienced and eco-friendly to DUV laser by utilization of CLBO crystal are 70% and all around fifty%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from fundamental to DUV.
The development of your 193-nm laser was shown by stages of SFG. So as to scale the DUV laser electrical power correctly, a whole new concept on the 193-nm DUV laser technology is presented depending on the diamond Raman laser.