Indicators on CLBO Crystal You Should Know
Indicators on CLBO Crystal You Should Know
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We summarized the current growth standing in the superior-power DUV laser each on the wavelength of FHG in the one-μm laser and at 193 nm. The latest growth in the strong-point out/fiber laser, together with the nonlinear optical crystals, prompts don't just the standard electricity but also the beam good quality (coherence) of the DUV lasers to an unprecedented level.
The standard energy of the NIR laser nonetheless has the possible to be enhanced to tens of watts which include 70 W [26] In the event the double-pass configuration can be utilized for that Yb:YAG SCF amplifier phase. Hence, When the conversion efficiency of 31% from NIR to DUV may very well be however taken care of at this increased energy ailment, the standard output power on the DUV laser at 258 nm may very well be much more than twenty W, which would become a remarkable power amount to the DUV laser and result in the unanticipated DUV laser machining results. What's more, for prime-ability DUV laser, the UV harm on the nonlinear crystal, including the Home windows for CLBO crystal plus the mirrors, is an additional important parameter for lasting and stable Procedure.
Alternatively, the beam quality of this bigger electricity DUV laser would turn into even worse on account of a lot more serious thermal and nonlinear consequences. Hence, the frequency conversion procedures must be very carefully made to mitigate the aforementioned effects. So, a higher-power DUV laser for the FHG of one μm with a very good beam quality may very well be acquired and may be valuable for getting the shorter wavelength DUV lasers for example 193 nm by SFG.
Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by stages of fiber amplifier and Yb-doped resources amplifier, respectively.
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The pulse duration of the next Stokes gentle was shortened to five ns as shown in Figure 7a, only one-shot picture from your oscilloscope, which is a typical phenomenon in Raman laser [forty four] while the heartbeat period of the pump laser was 10 ns.
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The beam profile shown in Determine more info 7b demonstrated a great beam high quality as one of many merits of Raman laser, which would be effective to produce a 193-nm DUV laser with a high quality beam.
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