The Basic Principles Of CLBO Crystal
The Basic Principles Of CLBO Crystal
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Having said that, in order to process the crystal is extremely Sophisticated manufacturing procedures are expected. Because the dawn of the crystal, engaged on this problem, we at the moment are the only enterprise on this planet that can be processed In this particular crystal.
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The crucial element problem of ultraviolet coherent light source mainly focuses on the development of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the ailments for frequency transformation, so The expansion, sizing, damage resistance, conversion efficiency and allowable parameter selection of nonlinear optical crystal are needed A lot more.
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LBO can be a wonderful nonlinear crystal which is always placed on the SHG within the NIR towards the inexperienced. The DUV laser will likely be understood by two stages of SFG from the LBO crystals considering that there is no phase-matching angle for LBO to convert the green laser at 515 nm or 532 nm towards the DUV immediately by SHG [sixteen]. A short while ago, the NSBBF crystal has also shown its possible to obtain a higher conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff on the NSBBF are Just about just like People of CLBO [17].
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The heartbeat duration of the next Stokes light was shortened to five ns as shown in Determine 7a, a single-shot photo with the oscilloscope, which is a common phenomenon in Raman laser [forty four] although the heartbeat length in the pump laser was 10 ns.
Moreover, combining the solid-condition laser with other nonlinear process which include stimulated Raman scattering, NIR lasers may very well be achieved at new wavelengths with higher ability and superior beam excellent, which was examined because of the proof-of-theory experiment. This Raman laser scheme supplies click here a brand new route to the substantial-ability DUV laser, In particular for the wavelength of 193 nm.
The beam profile proven in Figure 7b demonstrated a fantastic beam good quality as one of the merits of Raman laser, which would be advantageous to create a 193-nm DUV laser with a high quality beam.
The conversion efficiency from essential NIR to DUV is from 5% to 36% in accordance with the described results in Desk one. Escalating the conversion performance will decrease the stress on the design and set up of the fundamental laser amplifier and also the electric ability usage. A fantastic beam top quality of the fundamental laser may even add to the escalating with the conversion performance in addition to the appropriate electricity depth with the NIR and environmentally friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [12], which corresponds into the conversion performance of 35% from elementary to DUV.
The development of your 193-nm laser was demonstrated by phases of SFG. To be able to scale the DUV laser electric power successfully, a different idea on the 193-nm DUV laser technology is presented determined by the diamond Raman laser.