The Definitive Guide to KGW Crystal
The Definitive Guide to KGW Crystal
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Later on, an investigation within the spectral attain curve of Yb:KGW in the key amplifier will be performed below cryogenic temperature evolution from seventy seven K to three hundred K. The Functioning temperature will probably be controlled to appreciate broader achieve bandwidth and less shift on the central wavelength of the key amplifier.
In its elemental sort, potassium has a silvery gray metallic physical appearance, but its compounds (such as potassium hydroxide) are more usually Employed in industrial and chemical apps.
-switched method. The bandwidth during the orthogonal orientation was Evidently A great deal broader. The calculated Fourier rework minimal pulse period was as shorter as sub-one hundred sixty fs. Beneath the configuration where by The 2 crystals were being put in exactly the same orientation, Together with the seed input, the amplified pulse bandwidth was only three nm with one hundred eighty μJ Electrical power when it broke the dichroic mirrors.
The calculated Slash-off wavelengths at the short-wavelength facet are consistent with the general development of blue-shifted spectral broadening to the bandgap of nonlinear content. All of the nonlinear materials developed realistic pink-shifted spectral broadenings beneath conditions of ideal pump pulse energies, with the biggest red-change exceeding 2000 nm calculated in GGG crystal. Our results uncovered that GGG and BGO (which also experienced the bottom supercontinuum generation threshold) supply strong, optical damage-free performance at a laser repetition level of 200 kHz, suggesting that these products are excellent alternate options to YAG and KGW for small threshold, higher regular power supercontinuum technology during the close to- and quick-wave infrared spectral ranges. We also demonstrated that scintillating Houses of bulk supplies could be readily researched within the filamentation routine, by using multiphoton excitation using in close proximity to-infrared femtosecond laser pulses.
Nevertheless, once Nd3+:YAG grew to become commercially out there, the interest in CaWO4 dropped sharply. In later decades, particular other tungstate crystals started to entice a great deal of awareness.
Comparison of spectral Vitality densities of supercontinua produced in the ailments of best pumping from the investigated products.
Check with RP Photonics for virtually any assistance relating to tungstate lasers, like femtosecond lasers and substantial-power lasers.
The 2-pump laser could present around a hundred and twenty W electricity. Roughly 60% of the utmost pump electrical power was utilized in our experiment considering the minimal overall performance of the dichroic mirrors. Beneath this twin-crystal configuration, our cavity supports a a hundred W pump power input, as mentioned in Area 2.two. Significant-high-quality dichroic mirrors might be made use of Down the road, and laser pulses will be stretched to an extended pulse period.
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-switched laser check here output underneath the two crystal placement configurations. The black line denotes the configuration While using the crystals put in precisely the same orientation, although the pink line is underneath the configuration of crystals placed in orthogonal orientation.
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An illustration of this kind of conduct is revealed in Fig. 7a. The character of spectral alterations is highlighted in Fig. 7d, which reveals how the SC spectrum over the lengthy-wavelength side shrinks substantially, from 1800 nm to 1450 nm, just immediately after eight minutes of exposure time inside a stationary sample. LT crystal shown relatively much better very long-phrase efficiency: at pulse repetition premiums of nearly one hundred kHz no narrowing on either side with the SC spectrum was detected. Even so, fast narrowing with the SC spectrum in LT crystal was observed after the 1st 5 minutes of Procedure when the heartbeat repetition rate was set at two hundred kHz (info not shown). In contrast to the above elements, BGO and GGG shown superb SC generation performances with no spectral improvements in a pulse repetition amount of two hundred kHz, as attested by the time series of SC spectra in BGO and GGG, shown in Fig. 7b and c, respectively. Determine 7e and file outline equivalent designs of SC spectra at the beginning and at the end of 1 hour-lasting measurement in both elements.