The Definitive Guide to CLBO Crystal

The Definitive Guide to CLBO Crystal

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All-strong-condition ultraviolet lasers have already been greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the advantages of modest volume, prolonged lifestyle, significant efficiency, very good beam quality, huge tuning and narrow spectral line, and so forth. Employing large electric power in the vicinity of-infrared coherent light source as the basic frequency resource according to nonlinear tuning technological know-how, generating ultraviolet coherent radiation by multistage frequency conversion is considered a significant way to develop the ultraviolet coherent light source.

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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 additionally an excellent nonlinear crystal which is often placed on the SHG from your NIR into the eco-friendly. The DUV laser is usually understood by two levels of SFG during the LBO crystals since there is absolutely no stage-matching angle for LBO to convert the green laser at 515 nm or 532 nm on the DUV right by SHG [sixteen]. A short while ago, the NSBBF crystal has also shown its prospective to get a substantial conversion effectiveness from 532 nm to 266 nm. The walk-off angle and deff from the NSBBF are Nearly comparable to All those of CLBO [seventeen].

On the other facet, the facility scaling with the NIR laser is yet another part to enhance the ordinary ability with the 193-nm DUV laser. Mainly because of the not enough the superior-power amplification Resolution from the NIR laser (for example at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) can be applied to develop a wavelength converter by shifting the wavelength from one μm to the desired wavelength and obtaining relative better energy [21]. A short while ago, a diamond Raman laser showed its ability in obtaining a high electricity as well as a superior conversion effectiveness with the 1st Stokes of your 1-μm laser [22,23], which implies the possibility to get utilized inside the 193-nm DUV laser era on account of its significant Raman achieve and large frequency change.

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Also, combining the reliable-state laser with other nonlinear course of action for example stimulated Raman scattering, NIR lasers might be realized at new wavelengths with large ability and large beam quality, which was examined via the proof-of-theory experiment. This Raman laser plan gives a new route to the significant-power DUV laser, Specially for the wavelength of 193 nm.

The beam profile revealed in Figure 7b demonstrated an excellent beam quality as one of many deserves of Raman laser, which might be helpful to crank out a 193-nm DUV laser with a top quality beam.

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The event of the 193-nm laser was shown by levels of SFG. So as to scale the DUV laser electric power properly, a whole new strategy from the 193-nm DUV laser generation is offered based on the diamond Raman laser.