5 Easy Facts About CLBO Crystal Described

All-good-point out ultraviolet lasers are actually widely used in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of little quantity, extensive daily life, significant effectiveness, great beam quality, broad tuning and narrow spectral line, and so on. Making use of substantial energy close to-infrared coherent mild source as the elemental frequency resource based upon nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is thought to be a significant approach to acquire the ultraviolet coherent gentle supply.

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By way of example, The present concave OC could be replaced by a plane mirror which could mitigate the facility density around the floor of M1 and the diamond. In addition, using superior destruction threshold coatings for M1 and diamond would also improve the output power with no damages. Then, the NIR laser within the 2nd Stokes wavelength could possibly be superior sufficient, along with its great beam excellent, to create the ultimate DUV laser at 193 nm by using a high common electric power.

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LBO is usually a superb nonlinear crystal which is usually applied to the SHG from your NIR for the green. The DUV laser is normally recognized by two stages of SFG within the LBO crystals considering that there is not any period-matching angle for LBO to convert the green laser at 515 nm or 532 nm to the DUV instantly by SHG [sixteen]. Lately, the NSBBF crystal has also proven its prospective to acquire a large conversion performance from 532 nm to 266 nm. The wander-off angle and deff in the NSBBF are Pretty much comparable to These of CLBO [seventeen].

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Inside the scientific and industrial apps, the beam high-quality of the DUV laser can also be a very important parameter. Particularly, the beam high quality on the DUV laser considerably influences the laser machining results. The beam high-quality of the DUV laser is decided by that of the basic laser along with the crystal for the frequency conversion. Recently, a higher-energy DUV laser (>ten W) at 258 nm was documented having a beam top quality 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 a far better laser machining end result compared to the preceding DUV lasers with larger M2.

The pulse length of the second Stokes light-weight was shortened to five ns as proven in Determine 7a, only one-shot picture from the oscilloscope, which happens to be a common phenomenon in Raman laser [44] when the pulse duration of the pump laser was ten ns.

Additionally, combining the reliable-state laser with other nonlinear system such as stimulated Raman scattering, NIR lasers may be realized at new wavelengths with substantial electricity and significant beam good quality, which was examined from the proof-of-theory experiment. This Raman laser plan presents a new route to the high-electric power DUV laser, Specifically for the wavelength of 193 nm.

The beam profile proven in Figure 7b demonstrated an excellent beam high-quality as one of the deserves of Raman laser, which might be beneficial to produce a 193-nm DUV laser with click here a high quality beam.

Its UV absorption edge reaches one hundred eighty nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals is often developed within the stoichiometric soften with lower viscosity.

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