Reverse engineering of multilayer coatings for ultrafast laser applications

Trubetskov, Michael K.; Amotchkina, Tatiana V.; Tikhonravov, Alexander V.; Pervak, Vladimir

doi:10.1364/ao.53.00a114

Cited by 10 publications

(2 citation statements)

References 25 publications

(43 reference statements)

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“…The initial DF value was 16.4 and the DF value achieved in the course of the discrepancy function minimization was 5.72. The obtained Δ value of 0.1% is in a full agreement with the estimated thickness non-uniformity[22]. of the determined layer thicknesses of the DM-Suprasil sample.…”

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confidence: 87%

Synthesis, fabrication and characterization of a highly-dispersive mirrors for the 2 µm spectral range

et al. 2017

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We report a challenging design, fabrication and post-production characterization problem of a dispersive mirror supporting the spectral range from 2000 nm to 2200 nm and providing a group delay dispersion of -1000 fs². The absolute reflectance in the working range is over 99.95%. The reported mirror is a critical element for Tm and Ho based lasers and paves the way for the development of ultrafast 2 µm lasers with sub-100 fs pulse duration.

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confidence: 87%

Synthesis, fabrication and characterization of a highly-dispersive mirrors for the 2 µm spectral range

et al. 2017

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“…Such techniques to compensate dispersion includes prisms [33], semiconductor saturable absorber mirrors SESAMs, among others but specifically multilayer interference coatings, such as chirped mirrors [34] (CMs) are a compact solution with a much larger bandwidth and custom compensation of high order dispersion [35]. In addition computer optimized designs of multilayer structures have been demonstrated [36].…”

Section: Reflective Spiral Phase Convertermentioning

confidence: 99%

Reflective Spiral Phase Converter: A New Route to Ultrafast Singular Optics

Baca-Montero

Shulika

2023

J. Lightwave Technol.

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A new device concept -the reflective spiral phase converter -is presented. The converter can be used for generation of ultrashort optical vortices and takes advantage of spiral phase plate to impose the vortex phase, and of a multilayer structure to compensate the dispersion acquired by incident pulse. We use (3+1)D numerical analysis of the spatio-spectrotemporal properties of ultrashort vortex pulses to quantify the effects of chromatic dispersion and propagation geometry, and characterize the efficiency of the device by checking the purity of the modes generated. Results of case studies in UV-VIS-NIR spectral ranges are presented. The proposed device allows to surpass the limitations of bandwidth from standard SPPs while keeping the pulse width and shape as undistorted as possible so it can widely be used for generation of ultrashort optical vortices.

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