The smart Trick of KGW Crystal That Nobody is Discussing
The smart Trick of KGW Crystal That Nobody is Discussing
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Former perform showed that the dual-crystal configuration can be used to compensate with the thermal lensing outcome[
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In summary, we shown that undoped scintillator crystals: BGO, GGG, YSO, LSO and LYSO are economical nonlinear resources for broadband SC technology inside the in the vicinity of-infrared and quick-wave infrared spectral ranges, when pumped by 180 fs basic harmonic pulses from an amplified Yb:KGW laser. YSO, LSO and LYSO generated two octave-spanning SC spectra, which Assess to SC spectra produced in YAG. These supplies show rather related performances to YAG also in terms of threshold and optimum pump pulse energies for SC generation. However, for what issues the chance to operate at substantial laser pulse repetition amount, YSO, LSO and LYSO show sturdy operation only at ten kHz and quickly degrade (inside of a few minutes) at twenty kHz. In addition to the somewhat small SC technology threshold (169 nJ), GGG shown excellent functionality qualities while in the limited-wave infrared Using the optimum pump pulse energy of 464 nJ, which is two periods lessen than in YAG: the biggest crimson-shifted spectral broadening and the best spectral Electrical power density, outperforming KGW and YAG crystals in that facet.
], but it might insert a lot more Price tag to this element. The intra-cavity spectral gain curve may be modulated by inserting an etalon that reduces the actual achieve in the wavelength with the most obtain component[
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One other was put with its Np -axis parallel Using the s-polarized course. A comparison was made in between a configuration Together with the crystals put in exactly the same orientation (
KGW (potassium gadolinium tungstate) is often a crystal that is often applied for a Raman crystal in Raman spectroscopy. It is just a colorless, clear crystal that features a substantial Raman scattering effectiveness and a powerful Raman spectrum, making it ideal for a range of Raman purposes.
Request RP Photonics for just about any information relating to tungstate lasers, like femtosecond lasers and large-energy lasers.
The 2-pump laser could give as much as 120 W electricity. Somewhere around 60% of the most pump power was utilized inside our experiment thinking of the small functionality from the dichroic mirrors. Less than this twin-crystal configuration, our cavity supports a a hundred W pump electrical power enter, as mentioned in Part 2.two. Substantial-good quality dichroic mirrors is going read more to be used in the future, and laser pulses might be stretched to a longer pulse duration.
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A multi-move most important amplifier will further more Raise the energy to above forty mJ. We are going to implement cryogenically cooled Yb:KGW technologies to restrain the thermal result. Two phases of compression is going to be employed following amplification. The 1st phase consists of a typical Treacy-kind compressor, and could compress the pulse length to below 300 fs with the efficiency of close to 70%. The 2nd stage entails a fuel-crammed multi-go cell[
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