Not known Details About CLBO Crystal
Not known Details About CLBO Crystal
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However, so as to approach the crystal is extremely Highly developed production tactics are necessary. Because the dawn of the crystal, focusing on this challenge, we are actually the only real organization on this planet which can be processed In this particular crystal.
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According to the evidence-of-theory experiment, the conversion efficiency of 23% implied the potential of achieving substantial-power at the 2nd Stokes wavelength on the Raman laser. In the event the pump laser of 1078 nm may be received at the common power of 50 W, the output power of its 2nd Stokes wavelength at 1512 nm might be more than ten W. The design in the Raman laser cavity should be optimized in order to stay away from the damage with the M1 and diamond surface.
The main element challenge of ultraviolet coherent light-weight supply generally 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 performance and allowable parameter choice of nonlinear optical crystal are necessary A lot more.
Conversely, the beam good quality of the higher electric power DUV laser would turn out to be worse as a result of extra severe thermal and nonlinear consequences. That's why, the frequency conversion procedures ought to be diligently made to mitigate the aforementioned consequences. Thus, a large-electrical power DUV laser within the FHG of one μm with an excellent beam top quality may be received and can be helpful for acquiring the shorter wavelength DUV lasers for example 193 nm by SFG.
Mainly because of the thermal lens result in the solid-state lasers, In the event the heating administration is inadequate, It's not necessarily quick to get the solid-point out laser which has a substantial electric power plus a large beam excellent concurrently. Lately, with the development of the thin disk laser and single-crystal fiber (SCF) laser, a significant-energy laser at the fundamental wavelength (one μm) were understood with a superb beam high-quality Despite having a TEM00 mode beam [4,24], which might be superior candidates for the basic of the DUV laser era. Another applicant for the fundamental may be the superior-electrical power fiber laser which could possibly be attained by coherent beam mixture with M2 value below 1.
On one other facet, the facility scaling from the NIR laser is an additional part to improve the regular electricity on the 193-nm DUV laser. A result of the lack of the significant-electrical power amplification Resolution on the NIR laser (for example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) could possibly be applied to produce a wavelength converter by shifting the wavelength from 1 website μm to the specified wavelength and also obtaining relative better electricity [21]. Just lately, a diamond Raman laser confirmed its capacity in reaching a substantial electric power and a substantial conversion effectiveness within the 1st Stokes of the 1-μm laser [22,23], which suggests the chance to generally be used in the 193-nm DUV laser generation on account of its superior Raman obtain and huge frequency shift.
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The heart beat period of the next Stokes mild was shortened to 5 ns as demonstrated in Figure 7a, only one-shot photo with the oscilloscope, which happens to be a standard phenomenon in Raman laser [forty four] although the pulse period with the pump laser was 10 ns.
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The beam profile shown in Figure 7b demonstrated a very good beam top quality as among the deserves of Raman laser, which might be advantageous to deliver a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches one hundred eighty nm. The powerful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals can be grown with the stoichiometric soften with lower viscosity.
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