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On‐chip stimulated Brillouin scattering (SBS) in arsenic trisulfide (As2S3) planar waveguides lead to a range of outstanding demonstrations in microwave photonics signal generation and processing. However, the lack of other integrated functionalities, high back reflections, and large in‐ and out‐fiber coupling losses in high index contrast waveguides cause a number of serious impairments and lessen...
We have produced μ20mW of mid-infrared super continuum spanning from 1750nm to ≈8000nm spanning using a 1cm long chalcogenide waveguide pumped by a 21MHz train of 320fs pulses at 4μm.
We report the low-loss chalcogenide waveguides for bio sensing in the mid-infrared (MIR), which consisted of a Ge11. 5As24Se64.5 rib waveguide core on a magnesium fluoride crystalline substrate. The losses were < 2dB/cm from 3000-1050cm-1 (3.2 -- 9.5µm).
We have produced a stable 10mW, mid-infrared supercontinuum spanning the full functional group band from 1750nm to >7000nm spanning using a 1cm long chalcogenide waveguide pumped by a 20MHz train of 320fs pulses at 4µm.
We demonstrate compensation for the spherical aberration due to the refractive index mismatch that occurs when a laser beam is focused into a thick arsenic trisulfide (As $$_2$$ S $$_3$$ ) film with a high numerical aperture objective. The effects of the aberration at different focal depths on the point spread function have been calculated numerically and the axial response method shown to be...
In this paper, we report the first thermal nano-imprint fabrication of low loss As2S3 Chalocgenide glass waveguides. As2S3 rib waveguides 2–4µm wide and 1µm high with losses below 0.5dB/cm at 1550nm were thermally embossed by a soft stamp made from Polydimethylsiloxane (PDMS) on a 100mm wafer scale.
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