Indicators on KGW Crystal You Should Know
Indicators on KGW Crystal You Should Know
Blog Article
Previous perform showed that the dual-crystal configuration can be used to compensate for your thermal lensing effect[
Below you are able to post questions and remarks. So far as they get recognized from the author, they may surface earlier mentioned this paragraph along with the creator’s reply. The author will settle on acceptance based on specified requirements. Basically, The problem should be of sufficiently broad fascination.
In the future, an investigation within the spectral acquire curve of Yb:KGW in the most crucial amplifier might be executed under cryogenic temperature evolution from 77 K to three hundred K. The Performing temperature might be controlled to comprehend broader attain bandwidth and less shift in the central wavelength of the most crucial amplifier.
In summary, we demonstrated that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are successful nonlinear products for broadband SC generation from the around-infrared and brief-wave infrared spectral ranges, when pumped by 180 fs essential harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO created two octave-spanning SC spectra, which Examine to SC spectra created in YAG. These components show very equivalent performances to YAG also with regard to threshold and exceptional pump pulse energies for SC technology. Nevertheless, for what considerations the chance to operate at higher laser pulse repetition rate, YSO, LSO and LYSO demonstrate tough Procedure only at 10 kHz and speedily degrade (in just a couple of minutes) at twenty kHz. Apart from the reasonably very low SC generation threshold (169 nJ), GGG demonstrated outstanding overall performance features within the limited-wave infrared While using the ideal pump pulse Electricity of 464 nJ, which happens to be two instances lessen than in YAG: the biggest crimson-shifted spectral broadening and the best spectral Electrical power density, outperforming KGW and YAG crystals in that aspect.
Substitute of your Computer system for a far better a single or simply a fantastic adjustment of the Computer system orientation as well as the used large voltage is necessary to avoid this phenomenon. A fast pulse picker can be utilized to improve the nanosecond-scale distinction of your output major pulse.
Amplified pulses with an Vitality higher than two.5 mJ can be anticipated by applying a higher pump power to the regenerative amplifier and rendering it work with the saturation degree. The laser fluence of ~one J/cm2 to the dichroic mirrors is considered to get beneath the problems threshold of substantial-top quality dielectric-coated mirrors.
Skip to major content Thanks for visiting character.com. You happen to be employing a browser Model with confined aid for CSS. To acquire the top practical experience, we recommend you employ a more up-to-date browser (or transform off compatibility manner in Net Explorer).
The black line denotes the configuration with the crystals put in the exact same orientation, even though the red line is beneath the configuration of crystals put in orthogonal orientation.
The particular spectra were being reconstructed by correcting the measured spectra with the account to get more info the filter transmission functions and to the sensitivity functions on the spectrometers at the info publish-processing phase. The spectral dynamics in each sample was calculated by fine tuning the pump pulse Electrical power with a pc-managed attenuator which was integrated inside the laser method. Thermal Power meter EM (Ophir 3A-PF-12) was used to measure the SC Electricity which was thereafter utilized to work out the spectral energy density with the SC radiation. Many of the measurements ended up carried out without any translation with the sample with respect to your pump beam.
The two-pump laser could offer approximately a hundred and twenty W energy. About sixty% of the maximum pump energy was applied in our experiment contemplating the reduced efficiency in the dichroic mirrors. Below this twin-crystal configuration, our cavity supports a a hundred W pump power input, as talked over in Part 2.two. Substantial-good quality dichroic mirrors might be applied Sooner or later, and laser pulses will be stretched to a longer pulse duration.
Whilst BGO, GGG, YSO, LSO and LYSO at times function laser hosts37, They are really primarily identified as efficient scintillators, whose scintillation Homes are analyzed very well38. Having said that, the nonlinear optical Houses of these crystals and so their likely to serve as nonlinear components for SC era particularly, and every other experiments about nonlinear propagation of powerful femtosecond laser pulses, continue to be really poorly examined. Thus far, GGG, LT23,25 and YSO24 ended up only sketchily tested for SC generation with Ti:sapphire laser pumping, however, to the ideal of our information, none of the investigated products were examined with Yb-laser pumping, especially for what fears their functionality at very substantial (tens to hundreds of kHz) pulse repetition charges.
-switched output spectrum from the regenerative amplifier supports a sub-160 fs pulse amplification. As a result, pulses with energies of as many as 2 mJ and duration below two hundred fs could be obtained using greater-top quality dichroic mirrors as well as a broader-spectrum laser seed. This regenerative amplifier functions as a great pre-amplifier for further laser amplification.
The scattered photons have a different wavelength and Strength when compared to the incident photons, which results in a Raman spectrum.
The origin on the aspect's identify originates from the English phrase 'potash,' meaning pot ashes, along with the Arabic phrase qali