The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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We summarized The present development position from the significant-electricity DUV laser the two within the wavelength of FHG from the one-μm laser and at 193 nm. The current progress of the stable-state/fiber laser, in addition to the nonlinear optical crystals, prompts not simply the normal electric power but also the beam top quality (coherence) on the DUV lasers to an unparalleled degree.
The standard electrical power of your NIR laser nevertheless has the prospective to be improved to tens of watts for instance 70 W [26] When the double-move configuration could be utilized to the Yb:YAG SCF amplifier phase. Hence, In case the conversion performance of 31% from NIR to DUV could possibly be nevertheless preserved at this higher electrical power issue, the standard output electrical power with the DUV laser at 258 nm can be greater than twenty W, which might be described as a amazing energy level with the DUV laser and bring on the unanticipated DUV laser machining benefits. In addition, for prime-power DUV laser, the UV destruction on the nonlinear crystal, including the windows for CLBO crystal as well as mirrors, is yet another vital parameter for lasting and steady Procedure.
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As a result of thermal lens effect while in the strong-condition lasers, When the heating administration is inadequate, It's not necessarily straightforward to acquire the strong-condition laser that has a high electric power and a large beam good quality concurrently. Not long ago, with the event of The skinny disk laser and solitary-crystal fiber (SCF) laser, a substantial-electrical power laser at the elemental wavelength (one μm) were realized with a great beam top quality Despite having a TEM00 manner beam [four,24], which would be excellent candidates for the basic from the DUV laser generation. Another candidate for the fundamental would be the high-ability fiber laser which may be attained by coherent beam mix with M2 value fewer than 1.
On one other side, the facility scaling in the NIR laser is yet another facet to enhance more info the ordinary electrical power of the 193-nm DUV laser. A result of the not enough the high-electricity amplification solution in the NIR laser (such as at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) can be applied to develop a wavelength converter by shifting the wavelength from one μm to the specified wavelength as well as acquiring relative greater energy [21]. Not too long ago, a diamond Raman laser showed its capability in attaining a large electrical power as well as a large conversion efficiency at the 1st Stokes of your one-μm laser [22,23], which implies the chance being utilized from the 193-nm DUV laser era due to its higher Raman obtain and large frequency change.
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The beam profile revealed in Figure 7b shown a great beam excellent as one of the merits of Raman laser, which would be advantageous to crank out a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as large as that of KDP. CLBO crystals is often grown from the stoichiometric soften with reduce viscosity.
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