Not known Details About CLBO Crystal
Not known Details About CLBO Crystal
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All-sound-point out ultraviolet lasers are actually broadly used in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of modest quantity, prolonged lifetime, higher efficiency, superior beam high-quality, huge tuning and slim spectral line, etc. Employing substantial ability close to-infrared coherent light resource as the basic frequency resource based upon nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is regarded as a vital technique to build the ultraviolet coherent light-weight source.
In comparison to BBO it capabilities larger spectral and temperature acceptance, far better angle tolerance, in addition to a smaller sized stroll-off angle. from 3289 $ shipping
Based on the proof-of-basic principle experiment, the conversion performance of 23% implied the possibility of obtaining significant-ability at the next Stokes wavelength of your Raman laser. If the pump laser of 1078 nm might be obtained at the normal electric power of fifty W, the output power of its 2nd Stokes wavelength at 1512 nm can be greater than ten W. The look of the Raman laser cavity really should be optimized to be able to steer clear of the destruction from the M1 and diamond surface area.
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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LBO is usually a superb nonlinear crystal which is usually placed on the SHG from the NIR for the green. The DUV laser is often understood by two levels of SFG in the LBO crystals considering that there is not any section-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm on the DUV right by SHG [16]. Not too long ago, the NSBBF crystal has also proven its prospective to get a higher conversion performance from 532 nm to 266 nm. The walk-off angle and deff from the NSBBF are almost much like These of CLBO [17].
On one other aspect, the facility scaling of your NIR laser is an additional facet to increase the normal energy of the 193-nm DUV laser. Mainly because of the deficiency of the higher-electric power amplification Remedy of your NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength as well as acquiring relative bigger electrical power [21]. Not long ago, a diamond Raman laser confirmed its capability in obtaining a significant power plus a significant conversion performance on the 1st Stokes on the 1-μm laser [22,23], which implies the likelihood to generally be applied within the 193-nm DUV laser generation due to its higher Raman acquire and large frequency change.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. In order to greatly enhance the destruction threshold, very low CLBO surface area roughness, by extremely-precision machining, is required. As the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-precise machining of your CLBO crystal is often a challenging technological dilemma.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% according to the claimed leads to Desk one. Rising the conversion performance will decrease the stress here on the look and setup of the basic laser amplifier along with the electrical power usage. A fantastic beam quality of the basic laser may even add to the increasing in the conversion performance as well as the appropriate energy intensity from the NIR and eco-friendly laser while in the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds on the conversion effectiveness of 35% from fundamental to DUV.
The event of the 193-nm laser was demonstrated by levels of SFG. To be able to scale the DUV laser electric power effectively, a whole new thought from the 193-nm DUV laser technology is introduced according to the diamond Raman laser.