The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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However, so that you can course of action the crystal is incredibly Sophisticated manufacturing approaches are necessary. Considering that the dawn of this crystal, working on this obstacle, we are actually the only real organization on the globe that could be processed On this crystal.
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In accordance with the proof-of-principle experiment, the conversion effectiveness of 23% implied the potential of acquiring higher-electric power at the next Stokes wavelength of your Raman laser. When the pump laser of 1078 nm may very well be attained at the typical electricity of 50 W, the output electrical power of its 2nd Stokes wavelength at 1512 nm may be in excess of 10 W. The look with the Raman laser cavity really should be optimized so as to stay away from the injury from the M1 and diamond surface.
The crucial element difficulty of ultraviolet coherent light-weight resource primarily focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal has become the conditions for frequency transformation, so the growth, dimension, injury resistance, conversion efficiency and allowable parameter range of nonlinear optical crystal are needed A growing number of.
On the flip side, the beam good quality of the higher electric power DUV laser would grow to be even worse due to additional severe thermal and nonlinear outcomes. Hence, the frequency conversion procedures should be meticulously meant to mitigate the aforementioned results. As a result, a significant-ability DUV laser at the FHG of 1 μm with an excellent beam good quality may very well be received and can be useful for acquiring the shorter wavelength DUV lasers for example 193 nm by SFG.
Equally the 1040 nm and 1078 nm laser come from a single twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped elements amplifier, respectively.
On the opposite aspect, the ability scaling on the NIR laser is an additional facet to raise the typical energy from the 193-nm DUV laser. Because of the deficiency of the higher-energy amplification Alternative in the NIR laser (for example at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) may very well be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with acquiring relative bigger energy [21]. Not long ago, a diamond Raman laser confirmed its means in attaining a superior electrical power in addition to a high conversion efficiency on the 1st Stokes with the one-μm laser [22,23], which implies the possibility for being utilized from the 193-nm DUV laser technology thanks to its superior Raman gain and enormous frequency change.
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While in the scientific and industrial apps, the beam good quality on the DUV laser can be a vital parameter. Notably, the beam good quality in the DUV laser significantly affects the laser machining success. The beam good quality from the DUV laser is set by that of the fundamental laser as well as the crystal for that frequency conversion. Recently, a superior-electrical power DUV laser (>10 W) at 258 nm was reported which has a beam good quality of M2 read more < one.5, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring about an even better laser machining outcome as compared to the prior DUV lasers with much larger M2.
The heartbeat duration of the 2nd Stokes mild was shortened to 5 ns as demonstrated in Figure 7a, a single-shot image from the oscilloscope, and that is a standard phenomenon in Raman laser [forty four] whilst the heart beat duration in the pump laser was ten ns.
Furthermore, combining the stable-state laser with other nonlinear system for instance stimulated Raman scattering, NIR lasers might be reached at new wavelengths with high electrical power and higher beam excellent, which was examined because of the evidence-of-theory experiment. This Raman laser scheme supplies a whole new path to the significant-electric power DUV laser, Particularly at the wavelength of 193 nm.
Tunable ultraviolet laser supply determined by reliable-point out dye laser engineering and CsLiB6O10 harmonic generation
Its UV absorption edge reaches a hundred and eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as large as that of KDP. CLBO crystals is usually grown with the stoichiometric soften with decreased viscosity.
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