5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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As an illustration, The present concave OC could get replaced by a aircraft mirror which could mitigate the facility density on the floor of M1 and also the diamond. In addition, making use of substantial destruction threshold coatings for M1 and diamond would also Increase the output electric power without any damages. Then, the NIR laser on the 2nd Stokes wavelength could possibly be higher sufficient, as well as its fantastic beam high-quality, to make the ultimate DUV laser at 193 nm using a substantial normal energy.
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LBO can be a wonderful nonlinear crystal which is always applied to the SHG in the NIR to your green. The DUV laser is normally recognized by two phases of SFG from the LBO crystals due to the fact there is no phase-matching angle for LBO to convert the inexperienced laser at 515 nm or 532 nm into the DUV straight by SHG [16]. Not too long ago, the NSBBF crystal has also demonstrated its probable to acquire a superior conversion performance from 532 nm to 266 nm. The wander-off angle and deff of your NSBBF are Pretty much just like People of CLBO [17].
On another side, the power scaling from the NIR laser is another aspect to enhance the ordinary electric power with the 193-nm DUV laser. A result of the insufficient the significant-electricity amplification solution with the NIR laser (as an example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative increased ability [21]. Lately, a diamond Raman laser showed its skill in achieving a higher electricity plus a large conversion effectiveness within the 1st Stokes of the 1-μm laser [22,23], which implies the possibility to get utilized from the 193-nm DUV laser technology thanks to its superior Raman get and large frequency change.
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The heartbeat period of the second Stokes light was shortened to 5 ns as shown in Figure 7a, only one-shot image within the oscilloscope, which can be a standard phenomenon in Raman laser [44] although the heart beat period from the pump laser was ten ns.
Moreover, combining the reliable-condition laser with other nonlinear process such as stimulated Raman scattering, NIR lasers can be achieved at click here new wavelengths with higher energy and large beam excellent, which was examined with the proof-of-principle experiment. This Raman laser plan supplies a whole new route to the high-ability DUV laser, Primarily with the wavelength of 193 nm.
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The event of the 193-nm laser was demonstrated by phases of SFG. So as to scale the DUV laser power efficiently, a new concept on the 193-nm DUV laser technology is introduced based on the diamond Raman laser.