5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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Based on the proof-of-principle experiment, the conversion performance of 23% implied the possibility of obtaining significant-power at the second Stokes wavelength from the Raman laser. In case the pump laser of 1078 nm could possibly be acquired at the common electric power of fifty W, the output electricity of its 2nd Stokes wavelength at 1512 nm may very well be in excess of ten W. The look on the Raman laser cavity must be optimized as a way to stay away from the injury from the M1 and diamond surface.
全固态紫外激光器以其体积小、寿命长、效率高、光束质量好、调谐范围宽、谱线窄等优点，广泛应用于机械探伤、光刻、微加工和医学等领域，等，利用大功率近红外相干光源作为基于非线性调谐技术的基频源，通过多级变频产生紫外相干辐射被认为是发展紫外相干光源的重要途径。紫外相干光源的关键问题是研制紫外波段的非线性光学变频晶体。非线性光学晶体是实现频率变换的条件之一，因此对非线性光学晶体的生长、尺寸、损伤电阻、转换效率和允许的参数范围提出了越来越高的要求。
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The two the 1040 nm and 1078 nm laser originate from just one dual-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
On the opposite aspect, the power scaling from the NIR laser is another facet to raise the regular electric power with the 193-nm DUV laser. Due to the not enough the superior-ability amplification Alternative with the NIR laser (for instance at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) might be placed on develop a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength and also getting relative increased energy [21]. Not long ago, a diamond Raman laser showed its potential in achieving a substantial electricity as well as a significant conversion performance within the 1st Stokes from the one-μm laser [22,23], which suggests the chance to more info become utilized during the 193-nm DUV laser generation as a result of its substantial Raman achieve and enormous frequency change.
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While in the scientific and industrial applications, the beam high quality from the DUV laser can be a vital parameter. Specially, the beam quality in the DUV laser radically influences the laser machining outcomes. The beam good quality of your DUV laser is set by that of the fundamental laser along with the crystal to the frequency conversion. A short while ago, a significant-electric power DUV laser (>ten W) at 258 nm was reported with a beam excellent of M2 < one.5, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would lead to an improved laser machining result in comparison to the previous DUV lasers with greater M2.
The heartbeat length of the 2nd Stokes light was shortened to 5 ns as shown in Figure 7a, a single-shot photo within the oscilloscope, which is a typical phenomenon in Raman laser [forty four] while the heartbeat duration of the pump laser was 10 ns.
In addition, combining the stable-point out laser with other nonlinear system which include stimulated Raman scattering, NIR lasers may be realized at new wavelengths with large electric power and substantial beam high-quality, which was tested by the evidence-of-basic principle experiment. This Raman laser plan delivers a new route to the high-ability DUV laser, In particular at the wavelength of 193 nm.
Tunable ultraviolet laser source depending on solid-point out dye laser technology and CsLiB6O10 harmonic technology
The conversion performance from essential NIR to DUV is from five% to 36% in accordance with the documented brings about Desk one. Increasing the conversion efficiency will decrease the load on the look and setup of the elemental laser amplifier as well as the electric powered energy usage. A superb beam high-quality of the elemental laser will also contribute towards the escalating in the conversion effectiveness and also the suitable electricity intensity on the NIR and inexperienced laser while in the SHG and FHG approach, respectively. The very best conversion efficiencies from NIR to eco-friendly and eco-friendly to DUV laser by use of CLBO crystal are 70% and around fifty%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from fundamental to DUV.
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