All-good-condition ultraviolet lasers happen to be commonly used in the fields of mechanical flaw detection, lithography, micromachining and medication for the advantages of smaller volume, very long lifestyle, significant efficiency, very good beam quality, large tuning and narrow spectral line, and so forth. Utilizing higher electric power close to-infrared coherent gentle resource as the fundamental frequency supply based on nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is viewed as an important approach to establish the ultraviolet coherent light source.
In comparison to BBO it features bigger spectral and temperature acceptance, far better angle tolerance, plus a more compact stroll-off angle. from 3289 $ shipping
We summarized The present growth status of your significant-power DUV laser both of those on the wavelength of FHG of the one-μm laser and at 193 nm. The modern improvement of your stable-state/fiber laser, as well as the nonlinear optical crystals, prompts not simply the common power and also the beam top quality (coherence) of your DUV lasers to an unprecedented degree.
The true secret trouble of ultraviolet coherent mild resource mostly concentrates on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the disorders for frequency transformation, so the growth, dimensions, damage resistance, conversion effectiveness and allowable parameter range of nonlinear optical crystal are needed Progressively more.
However, the beam top quality of this better electric power DUV laser would develop into worse because of extra really serious thermal and nonlinear consequences. For this reason, the frequency conversion procedures must be meticulously designed to mitigate the aforementioned outcomes. Therefore, a higher-ability DUV laser with the FHG of one μm with a very good website beam quality could be attained and may be helpful for obtaining the shorter wavelength DUV lasers for instance 193 nm by SFG.
Both the 1040 nm and 1078 nm laser originate from 1 twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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From the scientific and industrial programs, the beam quality on the DUV laser can also be an important parameter. Notably, the beam high-quality from the DUV laser radically impacts the laser machining benefits. The beam high-quality of the DUV laser is determined by that of the fundamental laser and also the crystal to the frequency conversion. Not long ago, a significant-ability DUV laser (>ten W) at 258 nm was described by using a beam good quality of M2 < 1.5, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring on an even better laser machining consequence compared to the previous DUV lasers with larger M2.
The heartbeat length of the second Stokes light was shortened to 5 ns as shown in Figure 7a, just one-shot image with the oscilloscope, which happens to be a common phenomenon in Raman laser [forty four] while the pulse period of your 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 basic laser wavelength. In order to enhance the damage threshold, lower CLBO floor roughness, by extremely-precision machining, is required. Because the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, ultra-specific machining in the CLBO crystal is really a tough technical trouble.
Tunable ultraviolet laser supply dependant on sound-condition dye laser technologies and CsLiB6O10 harmonic era
Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals is often developed with the stoichiometric soften with decrease viscosity.
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