2022
DOI: 10.1364/ome.458667
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Structure and mid-infrared optical properties of spin-coated polyethylene films developed for integrated photonics applications

Abstract: Polyethylene is a promising polymer for mid-infrared integrated optics due to its broad transparency and optimal refractive index. However, simple fabrication protocols that preserve its optical characteristics are needed to foster a wide range of applications and unlock its full potential. This work presents investigations of the optical and structural properties of spin-coated linear low-density polyethylene films fabricated under humidity-controlled conditions. The film thickness on polymer concentration de… Show more

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Cited by 16 publications
(9 citation statements)
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“…where e b = 2.2 is the background permittivity, a k = 0.6 cm À1 , o k = 1473 cm À1 , and g k = 5.3 cm À1 are the amplitude, the frequency and the decay rate of resonance. 42 As shown in Fig. 6(c), the PE molecule shows a sharp characteristic absorption around 1473 cm À1 related to the scissoring bending vibration of the methylene group.…”
Section: Imaging-based Polyethylene Molecule Fingerprint Detectionmentioning
confidence: 85%
“…where e b = 2.2 is the background permittivity, a k = 0.6 cm À1 , o k = 1473 cm À1 , and g k = 5.3 cm À1 are the amplitude, the frequency and the decay rate of resonance. 42 As shown in Fig. 6(c), the PE molecule shows a sharp characteristic absorption around 1473 cm À1 related to the scissoring bending vibration of the methylene group.…”
Section: Imaging-based Polyethylene Molecule Fingerprint Detectionmentioning
confidence: 85%
“…Therefore, the current development of a spin-coating process for micrometer-scale polyethylene-based thick films will help to boost future improved mid-IR chip-scale optofluidic microcavities. 55 Polyethylene is an excellent candidate for mid-IR applications due to its highly suitable refractive index profile, including broadband low losses throughout the entire mid-IR spectral range. 55 …”
Section: Resultsmentioning
confidence: 99%
“… 55 Polyethylene is an excellent candidate for mid-IR applications due to its highly suitable refractive index profile, including broadband low losses throughout the entire mid-IR spectral range. 55 …”
Section: Resultsmentioning
confidence: 99%
“…In the first case, we use a novel material class, i.e. polymers and in particular linear low-density polyethylene (LLDPE), 17 on top of the plasmonic Au layer. When making the LLDPE micrometerthick, it allows low-loss mode-guiding.…”
Section: Realizing Complex Mid-ir Picsmentioning
confidence: 99%
“…When making the LLDPE micrometerthick, it allows low-loss mode-guiding. 18 As shown in Fig. 3 in an alternative approach, we combine the thin Ge-slab on the Au plasmonic waveguide with on-chip fabricated micro-mirror structures for redirecting the mode along the chip-surface (PIC).…”
Section: Realizing Complex Mid-ir Picsmentioning
confidence: 99%