The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-solid-point out ultraviolet lasers have been greatly Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for the benefits of little quantity, very long life, large performance, good beam good quality, broad tuning and slim spectral line, and many others. Employing higher ability around-infrared coherent light supply as the basic frequency supply based on nonlinear tuning technologies, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as an essential strategy to acquire the ultraviolet coherent mild resource.
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We summarized The present advancement standing of the superior-electric power DUV laser equally in the wavelength of FHG of your 1-μm laser and at 193 nm. The new growth with the good-state/fiber laser, together with the nonlinear optical crystals, prompts not merely the normal electrical power and also the beam quality (coherence) in the DUV lasers to an unprecedented level.
For example, the current concave OC could get replaced by a airplane mirror which could mitigate the ability density to the floor of M1 plus the diamond. Additionally, employing higher harm threshold coatings for M1 and diamond would also Increase the output ability with no damages. Then, the NIR laser in the 2nd Stokes wavelength can be superior plenty of, together with its very good beam top quality, to produce the ultimate DUV laser at 193 nm which has a significant normal power.
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Both the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and click here Yb-doped materials amplifier, respectively.
On the other side, the ability scaling on the NIR laser is yet another element to boost the ordinary ability in the 193-nm DUV laser. Due to the lack of the higher-electric power amplification Remedy of your NIR laser (as an example at 1553 nm), nonlinear frequency processes like optical parameter oscillation (OPO) can be applied to produce a wavelength converter by shifting the wavelength from one μm to the desired wavelength as well as obtaining relative larger electrical power [21]. Just lately, a diamond Raman laser showed its capability in achieving a substantial ability plus a substantial conversion performance in the 1st Stokes in the one-μm laser [22,23], which means the possibility to get utilized in the 193-nm DUV laser generation thanks to its significant Raman achieve and huge frequency shift.
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The pulse period of the 2nd Stokes gentle was shortened to 5 ns as proven in Figure 7a, only one-shot photo through the oscilloscope, that's a typical phenomenon in Raman laser [44] whilst the pulse length with the pump laser was ten ns.
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Its UV absorption edge reaches a hundred and eighty nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as huge as that of KDP. CLBO crystals is often developed from the stoichiometric melt with reduced viscosity.
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