KGW Crystal - An Overview
KGW Crystal - An Overview
Blog Article
PDF Be sure to select a structure to save lots of. Through the use of this support, you agree that you'll only retain content for personal use, and won't brazenly distribute them by using Dropbox, Google Drive or other file sharing companies Please ensure which you settle for the conditions of use. Cancel
PDF Be sure to select a format to save. Through the use of this service, you concur that you will only preserve information for private use, and will never brazenly distribute them by using Dropbox, Google Push or other file sharing providers Be sure to confirm that you just settle for the terms of use. Terminate
We used a transmission grating (TG) as being a dispersive ingredient inside our stretcher and compressor. A compact configuration was adopted, where the stretcher along with the compressor shared one particular grating comparable to that in Ref.
Figure seven shows the calculated dispersion compensation consequence. The compressed pulse length is all-around 185 fs when the length of input pulses is one hundred fifty fs. The discrepancy between them will likely be drastically minimized with a longer pulse enter simply because uncompensated high-get dispersion issues less for longer pulses. This configuration was used to demonstrate the compressibility of our amplified pulses in the preliminary phase of our whole method. Sooner or later we'd undertake a grating-pair compressor for wonderful compensation for high-purchase dispersion.
-switched method. The bandwidth in the orthogonal orientation was Obviously much broader. The calculated Fourier transform confined pulse length was as small as sub-a hundred and sixty fs. Under the configuration exactly where The 2 crystals ended up positioned in exactly the same orientation, with the seed enter, the amplified pulse bandwidth was only 3 nm with 180 μJ Electricity when it broke the dichroic mirrors.
]. Etalon insertion would lead to more loss, having said that, time-to-time optimization would introduce the chance of element damage and instability towards the technique. A nonlinear regenerative amplifier could immediately deliver pulses that has a length as little as ninety seven fs along with a spectral bandwidth of 19 nm[
On the other hand, once Nd3+:YAG turned commercially readily available, the desire in CaWO4 dropped sharply. In later years, selected other tungstate crystals started to attract many attention.
At last, we investigated the lengthy-expression performances of SC technology in crystal samples below ideal pumping problems at larger laser repetition premiums. In doing so, the crystal samples were not translated and stored in a stationary placement with regard into the pump beam during the whole measurement. The illustrations illustrating robust very long-time period performances of SC technology in KGW and YAG crystals at large laser repetition prices could be discovered in other places. Additional especially, steady effectiveness of KGW crystal at two MHz pulse repetition fee underneath very related pump beam focusing geometry was documented recently30, whereas YAG crystal demonstrated secure general performance for several hours at two hundred kHz pulse repetition level In spite of incredibly restricted focusing of the pump beam (NA=0.085)32. The prolonged-expression overall performance checks in LSO, LYSO and YSO disclosed gradual narrowing on the SC spectra over the prolonged-wavelength facet that transpired just after a specific publicity time and will be attributed for the optical degradation of those components. For example, in LSO, the onset of spectral narrowing was noticed soon after (sim 20) minutes in a laser repetition amount of 10 kHz, while in a laser repetition amount of twenty kHz, steady SC generation overall performance was observed just for approximately two min.
We approach to spice up the pulse Electricity to earlier mentioned forty mJ in two-phase multi-pass amplifiers, comparable to a gain factor of twenty. In Each and every amplifier, we will also undertake two cascaded crystals positioned under orthogonal orientation to reduce the thermal load on Every get more info single crystal and compensate for the achieve-narrowing influence.
The threshold Strength for SC era (hbox E _ textrm th ) was described as being the pump pulse energy, in which the blue-shifted spectral broadening promptly settles to a particular Minimize-off wavelength That continues to be Practically continual even with further raise with the pump pulse energy. The ideal Vitality (hbox E _textrm decide ), was described as being the pump pulse Power, which makes the biggest purple-shifted spectral broadening before the onset of periodic modulation within the SC spectrum because of filament refocusing.
There isn't any products in your cart. Add things in your cart and ask for an Formal quote or get on the net Subtotal
Springer Mother nature stays neutral with regards to jurisdictional promises in printed maps and institutional affiliations.
Springer Mother nature or its licensor (e.g. a society or other husband or wife) retains unique rights to this informative article under a publishing settlement Using the writer(s) or other rightsholder(s); writer self-archiving in the accepted manuscript Variation of this article is solely ruled because of the conditions of these publishing arrangement and applicable law.
Assembling tungsten oxide hydrate nanocrystal colloids formed by laser ablation in liquid into fast-response electrochromic films.