The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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The crucial element challenge of ultraviolet coherent light supply predominantly concentrates on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is one of the situations for frequency transformation, so The expansion, size, harm resistance, conversion effectiveness and allowable parameter array of nonlinear optical crystal are essential Increasingly more.
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The two the 1040 nm and 1078 nm laser originate from 1 dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by stages of fiber amplifier and Yb-doped components amplifier, respectively.
On one other facet, the facility scaling in the NIR laser is an additional part to increase the average electricity from the 193-nm DUV laser. As a result of not enough the large-electric power amplification Option with the NIR laser (such as at 1553 nm), nonlinear frequency procedures which include optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as acquiring relative higher electric power [21]. A short while ago, a diamond Raman laser showed its capacity in acquiring a substantial energy in addition to a significant conversion performance with the 1st Stokes in the 1-μm laser [22,23], which suggests the chance to get used during the 193-nm DUV laser generation as a consequence of its higher Raman get and enormous frequency change.
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From the scientific and industrial applications, the beam good quality on the DUV laser is also a crucial parameter. Specially, the beam quality of your DUV laser substantially impacts the laser machining success. The beam high quality of your DUV laser is decided by that of the elemental laser plus the crystal with the frequency conversion. Recently, a large-energy DUV laser (>ten W) at 258 nm was reported by using a beam high quality of M2 < 1.five, which was produced by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would result in a better laser machining end result in comparison to the former DUV lasers with bigger M2.
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Its UV absorption edge reaches a hundred and eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as significant as that here of KDP. CLBO crystals is often developed from your stoichiometric melt with reduce viscosity.
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