Investigation of materials for supercontinuum generation for subsequent nonlinear parametrical and Raman amplification at 1 MHz repetition rate

Madeikis, Karolis; Dansette, Pierre-Marc; Bartulevičius, Tadas; Veselis, Laurynas; Jutas, Rokas; Eremchev, Maksim; Danilevičius, R.; Girdauskas, Valdas; Michailovaś, Andrejus

doi:10.1016/j.optlastec.2021.107373

Cited by 5 publications

(1 citation statement)

References 53 publications

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“…To this end, narrow bandgap dielectric crystals, such as potassium gadolinium tungstate (KGd(WO 4 ) 2 , KGW) and yttrium vanadate (YVO 4 , YVO), owing to their large values of nonlinear refractive indexes [27] emerge as potentially attractive candidates for this purpose. Although these materials produce only modest spectral broadenings on the short-wavelength side [25], more recent experiments with 1.03 and 1.55 𝜇m pumping demonstrate their capability to produce reasonable red-shifted spectral broadenings and a potential to operate at high repetition rates [28,29].…”

Section: Introductionmentioning

confidence: 99%

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

Marciulionyte,

Reggui,

Tamosauskas

et al. 2023

Preprint

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We present an experimental investigation of supercontinuum generation in potassium gadolinium tungstate (KGW) and yttrium vanadate (YVO) crystals pumped with 210 fs, 1030 nm pulses from an amplified Yb:KGW laser operating at 2 MHz repetition rate. We demonstrate that compared to commonly used sapphire and YAG, these materials possess considerably lower supercontinuum generation thresholds, produce remarkable red-shifted spectral broadenings (up to 1700 nm in YVO and up to 1900 nm in KGW) and exhibit less bulk heating due to energy deposition during filamentation process. Moreover, durable damage-free performance was observed without any translation of the sample, suggesting that KGW and YVO are excellent nonlinear materials for high repetition rate supercontinuum generation in the near and short-wave infrared spectral range.

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Section: Introductionmentioning

confidence: 99%

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

Marciulionyte,

Reggui,

Tamosauskas

et al. 2023

Preprint

View full text Add to dashboard Cite

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Effect of chirp on supercontinuum generation from Barium Zinc Borate glasses

Neethish

Kumar

Nalam

et al. 2022

Optics & Laser Technology

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High throughput wide field second harmonic imaging of giant unilamellar vesicles

et al. 2023

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Cell-sized giant unilamellar vesicles (GUVs) are an ideal tool for understanding lipid membrane structure and properties. Label-free spatiotemporal images of their membrane potential and structure would greatly aid the quantitative understanding of membrane properties. In principle, second harmonic imaging is a great tool to do so, but the low degree of spatial anisotropy that arises from a single membrane limits its application. Here, we advance the use of wide-field high throughput SH imaging by SH imaging with the use of ultrashort laser pulses. We achieve a throughput improvement of 78% of the maximum theoretical value and demonstrate subsecond image acquisition times. We show how the interfacial water intensity can be converted into a quantitative membrane potential map. Finally, for GUV imaging, we compare this type of nonresonant SH imaging to resonant SH imaging and two photon imaging using fluorophores.

show abstract

Investigation of materials for supercontinuum generation for subsequent nonlinear parametrical and Raman amplification at 1 MHz repetition rate

Cited by 5 publications

References 53 publications

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

KGW and YVO: two excellent nonlinear materials for high repetition rate infrared supercontinuum generation

Effect of chirp on supercontinuum generation from Barium Zinc Borate glasses

High throughput wide field second harmonic imaging of giant unilamellar vesicles

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