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Seminars
May 23, 2024
SEMINAR: Deeply subwavelength near- and mid-infrared photonics with van der Waals nanostructures

Hour: From 15:00h to 16:00h

Place: Seminar Room

SEMINAR: Deeply subwavelength near- and mid-infrared photonics with van der Waals nanostructures

ARTUR DAVOYAN
University of California, Los Angeles

Layered van der Waals materials have attracted significant attention due to their unique optical and electronic properties, as well as their potential for lattice mismatch-free integration. In this talk, I will discuss utility of multilayer and bulk van der Waals materials for deeply subwavelength photonics across near- and mid-infrared bands. I will show that transition metal dichalcogenide semiconductors, owing to their high refractive index and strong anisotropy, are ideally suited for confining near-infrared (>1 micron) light at the fraction of the wavelength. I will present our recent demonstration of photonic structures that can guide light efficiently in structures >15 times smaller than the free-space wavelength. I will further show that such strong confinement is of great potential for boosting light-materials interaction, including quantum and nonlinear. I will then discuss challenges and opportunities for integrated photonics and ability of vdW materials to rival silicon. In the second half of my talk, I will demonstrate our recent experiments with hBN metasurface infrared absorbers. I will demonstrate that such metasurfaces allow resonant and tunable light-trapping across a wide mid-wave infrared (6.5-8 micron) band in

Hosted by Prof. Dr. Georgia Papadakis
Seminars
May 23, 2024
SEMINAR: Deeply subwavelength near- and mid-infrared photonics with van der Waals nanostructures

Hour: From 15:00h to 16:00h

Place: Seminar Room

SEMINAR: Deeply subwavelength near- and mid-infrared photonics with van der Waals nanostructures

ARTUR DAVOYAN
University of California, Los Angeles

Layered van der Waals materials have attracted significant attention due to their unique optical and electronic properties, as well as their potential for lattice mismatch-free integration. In this talk, I will discuss utility of multilayer and bulk van der Waals materials for deeply subwavelength photonics across near- and mid-infrared bands. I will show that transition metal dichalcogenide semiconductors, owing to their high refractive index and strong anisotropy, are ideally suited for confining near-infrared (>1 micron) light at the fraction of the wavelength. I will present our recent demonstration of photonic structures that can guide light efficiently in structures >15 times smaller than the free-space wavelength. I will further show that such strong confinement is of great potential for boosting light-materials interaction, including quantum and nonlinear. I will then discuss challenges and opportunities for integrated photonics and ability of vdW materials to rival silicon. In the second half of my talk, I will demonstrate our recent experiments with hBN metasurface infrared absorbers. I will demonstrate that such metasurfaces allow resonant and tunable light-trapping across a wide mid-wave infrared (6.5-8 micron) band in

Hosted by Prof. Dr. Georgia Papadakis