What Does CLBO Crystal Mean?

What Does CLBO Crystal Mean?

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All-strong-state ultraviolet lasers happen to be extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of modest quantity, extensive lifestyle, higher effectiveness, excellent beam high quality, wide tuning and slender spectral line, and so forth. Employing high ability in close proximity to-infrared coherent light supply as the fundamental frequency resource determined by nonlinear tuning technology, building ultraviolet coherent radiation by multistage frequency conversion is viewed as a very important strategy to create the ultraviolet coherent light-weight source.

In comparison with BBO it capabilities bigger spectral and temperature acceptance, far better angle tolerance, and also a lesser wander-off angle. from 3289 $ supply

In accordance with the evidence-of-theory experiment, the conversion efficiency of 23% implied the potential of reaching higher-power at the next Stokes wavelength of your Raman laser. In the event the pump laser of 1078 nm could possibly be attained at the normal electrical power of fifty W, the output electricity of its 2nd Stokes wavelength at 1512 nm might be more than 10 W. The look from the Raman laser cavity must be optimized as a way to steer clear of the damage on the M1 and diamond area.

As an illustration, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density over the floor of M1 as well as the diamond. What's more, working with substantial harm threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser on the 2nd Stokes wavelength could be substantial enough, and also its good beam good quality, to deliver the final DUV laser at 193 nm using a substantial average electricity.

On the other hand, the beam good quality of the larger ability DUV laser would grow to be even worse due to a lot more really serious thermal and nonlinear effects. Therefore, the frequency conversion processes really should be diligently intended to mitigate the aforementioned results. Thus, a superior-electricity DUV laser within the FHG of one μm with a good beam excellent might be received and can be advantageous for getting the shorter wavelength DUV lasers for example 193 nm by SFG.

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On another side, the ability scaling of the NIR laser is an additional aspect to enhance the normal energy with the 193-nm DUV laser. As a result of deficiency of the high-ability amplification Remedy with the NIR laser (for example at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) could be applied to create a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength together with getting relative bigger power [21]. Lately, a diamond Raman laser confirmed its ability in achieving click here a high electric power and also a substantial conversion effectiveness on the 1st Stokes from the one-μm laser [22,23], which suggests the likelihood to get applied during the 193-nm DUV laser era as a result of its superior Raman get and large frequency change.

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Within the scientific and industrial applications, the beam high-quality with the DUV laser can be an essential parameter. Particularly, the beam excellent in the DUV laser dramatically impacts the laser machining final results. The beam high quality with the DUV laser is determined by that of the basic laser as well as crystal for your frequency conversion. Not long ago, a higher-electricity DUV laser (>ten W) at 258 nm was described with a beam top quality of M2 < 1.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would lead to a much better laser machining result when compared with the past DUV lasers with larger M2.

The heartbeat period of the second Stokes mild was shortened to five ns as revealed in Figure 7a, an individual-shot picture through the oscilloscope, which is a typical phenomenon in Raman laser [forty four] though the pulse length on the pump laser was ten ns.

Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics of the Nd:YAG essential laser wavelength. In an effort to boost the damage threshold, very low CLBO surface area roughness, by extremely-precision machining, is needed. As the CLBO crystal has simple hydroscopic reaction and micro scratches in machining, extremely-specific machining from the CLBO crystal is actually a difficult technical dilemma.

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Its UV absorption edge reaches 180 nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as significant as that of KDP. CLBO crystals might be developed through the stoichiometric soften with decreased viscosity.

The event on the 193-nm laser was shown by levels of SFG. So that you can scale the DUV laser power effectively, a new thought of your 193-nm DUV laser technology is introduced based on the diamond Raman laser.