The KGW Crystal Diaries
The KGW Crystal Diaries
Blog Article
To save this post for your Dropbox account, be sure to pick out one or more formats and ensure you agree to abide by our utilization policies.
To save this article for your Google Generate account, remember to select a number of formats and make sure which you agree to abide by our usage guidelines.
The attain bandwidth e.g. of Yb:KGW and Yb:KYW is very huge when compared with that of Yb:YAG. This enables for extensive wavelength tunability and for A lot shorter pulse durations from method-locked lasers. Values effectively beneath 100 fs are actually attained with passive method locking.
In its elemental sort, potassium provides a silvery grey metallic visual appearance, but its compounds (which include potassium hydroxide) are more frequently Utilized in industrial and chemical applications.
-switched manner. The bandwidth from the orthogonal orientation was Obviously A lot broader. The calculated Fourier renovate minimal pulse duration was as shorter as sub-160 fs. Underneath the configuration where the two crystals were being positioned in the exact same orientation, With all the seed enter, the amplified pulse bandwidth was only three nm with 180 μJ Strength when it broke the dichroic mirrors.
The measured Minimize-off wavelengths with the shorter-wavelength side are in keeping with the overall craze of blue-shifted spectral broadening around the bandgap of nonlinear substance. All of the nonlinear components made affordable purple-shifted spectral broadenings below problems of optimum pump pulse energies, with the biggest pink-shift exceeding 2000 nm measured in GGG crystal. Our outcomes unveiled that GGG and BGO (which also experienced the bottom supercontinuum era threshold) present resilient, optical harm-free of charge overall performance in a laser repetition amount of 200 kHz, suggesting that these components are good options to YAG and KGW for reduced threshold, substantial normal electricity supercontinuum generation in the in close proximity to- and small-wave infrared spectral ranges. We also demonstrated that scintillating properties of bulk supplies could possibly be commonly researched inside the filamentation routine, through multiphoton excitation using around-infrared femtosecond laser pulses.
To be a A part of GDPR policy, we use cookies to make sure that we provde the greatest working experience on our website.
In its elemental sort, gadolinium includes a silvery-white visual appeal. Gadolinium is often a uncommon earth or lanthanide element that possesses one of a kind Qualities beneficial to specialised apps for instance semiconductor fabrication and nuclear reactor shielding. It truly is utilized for both equally its higher magnetic second (seven.ninety fourμ B) As well as in phosphors and scintillator crystals. When complexed with EDTA ligands, it can be employed being an injectable distinction agent for MRIs. The element is named more info following the Finnish chemist and geologist Johan Gadolin.
Despite the fact that BGO and LT manufactured the narrowest SC spectra (a little a lot less than one.5 optical octaves), they may be considered as quite desirable nonlinear materials for broadband SC era with pumping at longer laser wavelengths. Owing to its significant nonlinearity, BGO exhibited the lowest SC technology threshold (78 nJ) Amongst the investigated elements, that's 25 % reduced than in KGW and will be considered as superb nonlinear product for quite reduced-threshold SC era. The noticed secure and durable injury-no cost functionality of BGO and GGG at two hundred kHz pulse repetition rate indicates that these nonlinear products have a possible for SC generation at even greater, MHz, repetition premiums. Additionally, these supplies provide SC radiation with an outstanding list of parameters which might be important for programs in substantial speed spectroscopy and imaging that utilize bulk-generated SC, see e.g.17,eighteen,19,20.
The purple-shifted Section of the SC spectrum in BGO has the lowest spectral Electricity density, which happens to be one–2 orders of magnitude reduced than in the rest of the products. Nevertheless, very small Strength threshold of SC generation, as well as very low ideal pump energy in BGO, need to be pointed out. The believed spectral Vitality densities created in LSO and LYSO are really similar to YAG throughout the main Portion of the SC spectrum. Quite possibly the most attention-grabbing discovering in that regard is GGG crystal, which, despite incredibly moderate blue-shifted spectral broadening, makes the largest spectral purple-shift and the very best spectral Power density during the 1600�?000 nm assortment, which is sort of an order of magnitude larger than that manufactured in YAG.
Make sure you accept conditions of use. Remember to tick the box to verify you agree that your title, comment and conflicts of interest (if recognized) are going to be seen on the website and also your comment might be printed in the journal within the Editor’s discretion. *
-switched laser output underneath the two crystal placement configurations. The black line denotes the configuration Using the crystals placed in the identical orientation, although the crimson line is beneath the configuration of crystals placed in orthogonal orientation.
This post has long been cited by the next publications. This list is produced determined by details supplied by Crossref.
Assembling tungsten oxide hydrate nanocrystal colloids fashioned by laser ablation in liquid into speedy-response electrochromic movies.