Highly efficient subwavelength imaging in mid-IR range using high dielectric hexagonal lattice photonic crystals

Zaremanesh, Mansour; Noori, Mina

doi:10.1117/1.oe.58.6.067108

Cited by 2 publications

(2 citation statements)

References 33 publications

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“…[ 2–4 ] So far, interesting and highly efficient devices based on PCs have been reported in sensing, imaging, cloaking and invisibility, and energy harvesting. [ 5–8 ] One of the major fields of applications is devoted to sensor design by PCs and diverse sensors have been reported for temperature, pressure, pH, humidity, and refractive index (RI) which find potential applications in healthcare, automation, defense, security, food quality control, and environment. [ 9–12 ] Recently, compact and label‐free refractive index sensors have been presented in PC platforms by insertion of gas or liquids in the microcavities or voids with high Q‐factor ( Q f ), sensitivity, and small mode volume.…”

Section: Introductionmentioning

confidence: 99%

Self‐Collimation and Slow Light‐Based Refractive Index Sensor with a Large Detection Range

2021

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In this study, a refractive index sensor based on self‐collimation and slow light is presented which operates in the Mid‐IR range (4 µm < λ < 4.133 µm). Here, the square and hexagonal arrays are merged as the background platform and the sensing area, respectively to provide self‐collimation and slow light properties. Three sensors based on slow‐light and self‐collimation are presented in detail which provide Q‐factor, sensitivity, and detection range of 227, 104 nm RIU−1, and 1–1.7, respectively in the best case. Furthermore, the sensor design based on self‐collimation and photonic bandgap phenomena in the background platform and the sensing area, respectively is presented with a single detection unit. The presented sensors are capable of gas or liquid detection with refractive indices in the range of 1–2 with enhanced Q‐factor and sensitivity of over 620 and 123, respectively.

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Section: Introductionmentioning

confidence: 99%

Self‐Collimation and Slow Light‐Based Refractive Index Sensor with a Large Detection Range

2021

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“…Recently, the all-angle PINR has been reported in square lattice PC by using high dielectric material in a bandwidth of 2.4% [29]. Also, a highly efficient subwavelength imaging has been demonstrated in hexagonal lattice PC for mid-IR applications [30].…”

Section: Introductionmentioning

confidence: 99%

Large-angle polarization insensitive negative refraction in the diagonal array photonic crystal

Zaremanesh¹,

Noori²

2019

Phys. Scr.

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In this article, the all-angle and polarization insensitive negative refraction (NR) properties are investigated in a 2D diagonal array photonic crystal. The rod-type structure presents the all-angle NR for TM 2 in a bandwidth of Δω/ω c ∼20%. The all-angle NR does not hold for the hole-type structure due to the overlap of the 2nd and the 3rd bands, however, the polarization insensitive negative refraction is achieved for incidence angles of over θ in =±20°in a bandwidth of Δω/ω c =10.6% in the second band. The proposed structure has been investigated using the PWE and the FDTD methods, regarding fabrication challenges in Si technology for the central operating wavelength of λ c =1550 nm.

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Highly efficient subwavelength imaging in mid-IR range using high dielectric hexagonal lattice photonic crystals

Cited by 2 publications

References 33 publications

Self‐Collimation and Slow Light‐Based Refractive Index Sensor with a Large Detection Range

Self‐Collimation and Slow Light‐Based Refractive Index Sensor with a Large Detection Range

Large-angle polarization insensitive negative refraction in the diagonal array photonic crystal

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