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In comparison with BBO it features more substantial spectral and temperature acceptance, much better angle tolerance, in addition to a more compact wander-off angle. from 3289 $ shipping and delivery
Based on the proof-of-principle experiment, the conversion efficiency of 23% implied the potential of accomplishing superior-energy at the next Stokes wavelength of your Raman laser. When the pump laser of 1078 nm can be acquired at the common electrical power of fifty W, the output energy of its 2nd Stokes wavelength at 1512 nm could possibly be a lot more than 10 W. The design of the Raman laser cavity should be optimized so that you can steer clear of the injury of the M1 and diamond floor.
The average energy in the NIR laser even now has the possible to get enhanced to tens of watts which include 70 W [26] if the double-pass configuration might be utilized to the Yb:YAG SCF amplifier stage. That's why, In the event the conversion efficiency of 31% from NIR to DUV might be nevertheless taken care of at this higher electricity problem, the common output electric power of your DUV laser at 258 nm could be a lot more than twenty W, which might be considered a exceptional electrical power level for your DUV laser and produce the unanticipated DUV laser machining outcomes. Moreover, for top-ability DUV laser, the UV problems of the nonlinear crystal, including the windows for CLBO crystal along with the mirrors, is an additional important parameter for long-term and secure Procedure.
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Both the 1040 nm and 1078 nm laser originate from a person twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
On one other aspect, the facility scaling on the NIR laser is another part to raise the average electricity from the 193-nm DUV laser. Because of the insufficient the high-electric power amplification Remedy of your NIR laser (as an example at 1553 nm), nonlinear frequency procedures including optical parameter oscillation (OPO) can be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative better energy [21]. Not long ago, a diamond Raman laser confirmed its capacity in accomplishing a superior energy plus a superior conversion efficiency on the 1st Stokes with the one-μm laser [22,23], which means the possibility to get utilized during the 193-nm DUV laser generation on account of its superior Raman gain and large frequency shift.
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Within the scientific and industrial applications, the beam quality from the DUV laser is also a vital parameter. Especially, the beam good quality with the DUV laser substantially impacts the laser machining outcomes. The beam high quality of your DUV laser is determined by that of the elemental laser plus the crystal for that frequency conversion. Lately, a higher-ability DUV laser (>ten W) at 258 nm was reported with a beam high-quality of M2 < 1.five, which was produced by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would lead to a better laser machining outcome when compared to the prior DUV lasers with larger sized M2.
The heart beat period of the second Stokes light-weight was shortened to five ns as proven in Figure 7a, only one-shot image from your oscilloscope, that's a standard phenomenon in Raman laser [forty four] when the heart beat period on the pump laser was ten ns.
In addition, combining the reliable-condition laser CLBO Crystal with other nonlinear system like stimulated Raman scattering, NIR lasers may be realized at new wavelengths with superior energy and higher beam high-quality, which was examined because of the evidence-of-basic principle experiment. This Raman laser plan delivers a completely new path to the superior-ability DUV laser, especially at the wavelength of 193 nm.
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Its UV absorption edge reaches 180 nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as significant as that of KDP. CLBO crystals may be grown through the stoichiometric soften with lessen viscosity.
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