Tunable and free-form planar optics

Berto, Pascal; Philippet, Laurent; Osmond, Johann; Liu, Chang; Afridi, Adeel; Marques, Marc Montagut; Agudo, Bernat Molero; Tessier, Gilles; Quidant, Romain

doi:10.1038/s41566-019-0486-3

Cited by 71 publications

(61 citation statements)

References 45 publications

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“…This increment indicates that the ultrasensitive temperature sensing effect of the p + -SiC/p-Si platform is achievable by manipulating light conditions and electric field/current. The electrical potential and resistance can be photochemically modulated, suggesting other possible applications such as thermal refractive elements (29). The results demonstrate the remarkable advance of the temperature sensing technology using the lateral photoelectricity and thermal excitation of charge carriers in the nanoheterostructure.…”

Section: Resultsmentioning

confidence: 74%

Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

et al. 2020

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The thermal excitation, regulation, and detection of charge carriers in solid-state electronics have attracted great attention toward high-performance sensing applications but still face major challenges. Manipulating thermal excitation and transport of charge carriers in nanoheterostructures, we report a giant temperature sensing effect in semiconductor nanofilms via optoelectronic coupling, termed optothermotronics. A gradient of charge carriers in the nanofilms under nonuniform light illumination is coupled with an electric tuning current to enhance the performance of the thermal sensing effect. As a proof of concept, we used silicon carbide (SiC) nanofilms that form nanoheterostructures on silicon (Si). The sensing performance based on the thermal excitation of charge carriers in SiC is enhanced by at least 100 times through photon excitation, with a giant temperature coefficient of resistance (TCR) of up to −50%/K. Our findings could be used to substantially enhance the thermal sensing performance of solid-state electronics beyond the present sensing technologies.

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Section: Resultsmentioning

confidence: 74%

Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

et al. 2020

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“…In our proof of concept experiment, we achieved the switching time of the phase as fast as 70 µs, which is by two orders of magnitude faster than conventional LC-SLM devices and one order of magnitude faster than previously reported thermo-optic spatial-light modulation techniques. 30 We argue, that thanks to this unique concept of the photothermal phase modulator featuring a marginal distortion of the optical image of less than 0.5% ( for glycerol Δn/ΔT=-2.7 × 10-4 K -1 , for BK7 glass Δn/ΔT= 3 × 10 -6 K -1 and sapphire Δn/ΔT=13 × 10 -6 K -1 . Simulations were processed with the Matlab software.…”

Section: Discussionmentioning

confidence: 88%

“…26,27 Most recently, there has been a focused research effort to generalize thermally driven wavefront shaping, e.g., by the combined effect of photo-thermal lenses with remaining challenges in speed and lateral resolution. [28][29][30] Here, we introduce a photothermal spatial light modulator (PT-SLM) enabling the adjustment of the phase-shift between the scattered light and the reference beam in iSCAT microscopy. We implement the new technology for quantitative phase imaging by placing the PT-SLM in a Fourier plane of an iSCAT microscope and extract the full phase information of the light scattered on weak scatterers.…”

mentioning

confidence: 99%

Fast photothermal spatial light modulation for quantitative phase imaging at the nanoscale

Robert

Bujak

Holanová

et al. 2020

Preprint

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Spatial light modulators have become an essential tool for advanced microscopy enabling breakthroughs in 3D, phase, or super-resolution imaging. However, continuous spatial-light modulation without diffraction artifacts, polarization dependence, and able to capture sub-ms microscopic motion is challenging. Here we present a photothermal spatial light modulator (PT-SLM) enabling the fast wavefront shaping free of diffraction artifacts, having a high transmissivity and modulation efficiency independent of light polarization. It is based on the microscopic heating of a thin layer of thermo-optic material confined between the photothermal heat-source and a transparent heatsink. We achieve a phase-shift > π with a response time as short as 70 µs with a theoretical limit in the sub-µs range. The combination of the PT-SLM with an interferometric scattering microscope (iSCAT) allowed us to perform quantitative phase imaging of sub-diffractional scatterers and decipher the 3D nanoscopic displacement of microtubules matching closely with control data from atomic force microscopy.

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“…In fact, Romain Quidant and coworkers recently demonstrated that microheaters 10 µm in diameter can operate at frequencies up to ~3.5 kHz. 37 This is the authors' version (post peer-review) of the manuscript: YK Ryu et al Nanoletters, 2020. https://doi.org/10.1021/acs.nanolett.0c01706…”

Section: Resultsmentioning

confidence: 99%

Microheater Actuators as a Versatile Platform for Strain Engineering in 2D Materials

et al. 2020

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We present microfabricated thermal actuators to engineer the biaxial strain in two-dimensional (2D) materials. These actuators are based on microheater circuits patterned onto the surface of a polymer with a high thermal expansion coefficient. By running current through the microheater one can vary the temperature of the polymer and induce a controlled biaxial expansion of its surface. This controlled biaxial expansion can be transduced to biaxial strain to 2D materials, placed onto the polymer surface, which in turn induces a shift of the optical spectrum. Our thermal strain actuators can reach a maximum biaxial strain of 0.64 % and they can be modulated at frequencies up to 8 Hz. The compact geometry of these actuators results in a negligible spatial drift of 0.03 µm/ºC, which facilitates their integration in optical spectroscopy measurements. We illustrate the potential of this strain engineering platform to fabricate a strain-actuated optical modulator with single-layer MoS2.

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Tunable and free-form planar optics

Cited by 71 publications

References 45 publications

Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

Fast photothermal spatial light modulation for quantitative phase imaging at the nanoscale

Microheater Actuators as a Versatile Platform for Strain Engineering in 2D Materials

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