Photonic crystals for the application to spectrometers and wavelength filters

Ohtera, Yasuo; Yamada, Hirohito

doi:10.1587/elex.10.20132001

Cited by 14 publications

(10 citation statements)

References 60 publications

(42 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A great deal of interest has developed in plasmonics, [12][13][14] in which a metal surface structure provides the means for the novel manipulation of photons. Significant advances in the field of photonic crystals [15][16][17] and micro/nanofabrication techniques have lead to considerable progress in plasmonics during the last decade. A periodical metal surface structure, referred to as a plasmonic crystal, 18 was reported to have significant potential for the expansion of the operating wavelength region beyond the near-IR region.…”

Section: Introductionmentioning

confidence: 99%

Wavelength selective wideband uncooled infrared sensor using a two-dimensional plasmonic absorber

et al. 2013

View full text Add to dashboard Cite

Abstract. A wavelength selective wideband uncooled infrared (IR) sensor that detects middle-wavelength and long-wavelength IR (MWIR and LWIR) regions has been developed using a two-dimensional plasmonic absorber (2-D PLA). The 2-D PLA has a Au-based 2-D periodic dimple-array structure, where photons can be manipulated using a spoof surface plasmon. Numerical investigations demonstrate that the absorption wavelength can be designed according to the surface period of dimples over a wide wavelength range (MWIR and LWIR regions). A microelectromechanical system-based uncooled IR sensor with a 2-D PLA was fabricated using complementary metal oxide semiconductor and micromachining techniques. Measurement of the spectral responsivity shows that the selective enhancement of responsivity is achieved over both MWIR and LWIR regions, where the wavelength of the responsivity peak coincides with the dimple period of the 2-D PLA. The results provide direct evidence that a wideband wavelength selective IR sensor can be realized simply by design of the 2-D PLA surface structure without the need for vertical control in terms of gap or thickness. A pixel array where each pixel has a different detection wavelength could be developed for multicolor IR imaging.

show abstract

Section: Introductionmentioning

confidence: 99%

Wavelength selective wideband uncooled infrared sensor using a two-dimensional plasmonic absorber

et al. 2013

View full text Add to dashboard Cite

show abstract

“…To realize advanced functions, conventional technologies utilize the optical resonance structure between the absorber and the bottom reflector [15,16,17] or make use of filters and polarizers [18,19,20,21,22]. In contrast, advanced technologies realize novel functions for thermal IR sensors only by manipulating the surface geometry of the absorber, i.e., without attaching any filters and polarizers.…”

Section: Introductionmentioning

confidence: 99%

Wavelength- or Polarization-Selective Thermal Infrared Detectors for Multi-Color or Polarimetric Imaging Using Plasmonics and Metamaterials

Ogawa

Kimata

2017

Materials

View full text Add to dashboard Cite

Wavelength- or polarization-selective thermal infrared (IR) detectors are promising for various novel applications such as fire detection, gas analysis, multi-color imaging, multi-channel detectors, recognition of artificial objects in a natural environment, and facial recognition. However, these functions require additional filters or polarizers, which leads to high cost and technical difficulties related to integration of many different pixels in an array format. Plasmonic metamaterial absorbers (PMAs) can impart wavelength or polarization selectivity to conventional thermal IR detectors simply by controlling the surface geometry of the absorbers to produce surface plasmon resonances at designed wavelengths or polarizations. This enables integration of many different pixels in an array format without any filters or polarizers. We review our recent advances in wavelength- and polarization-selective thermal IR sensors using PMAs for multi-color or polarimetric imaging. The absorption mechanism defined by the surface structures is discussed for three types of PMAs—periodic crystals, metal-insulator-metal and mushroom-type PMAs—to demonstrate appropriate applications. Our wavelength- or polarization-selective uncooled IR sensors using various PMAs and multi-color image sensors are then described. Finally, high-performance mushroom-type PMAs are investigated. These advanced functional thermal IR detectors with wavelength or polarization selectivity will provide great benefits for a wide range of applications.

show abstract

“…3 Wavelength-selectivity in IR sensors could also lead to additional applications, including gas analysis, fire detection, hazardous materials recognition, and ultimately multicolor information. However, there has been serious difficulty to date in the construction of pixel-array formats with different detection wavelengths using typical wavelengthselective methods such as filters [4][5][6][7] or optical resonant cavities. 8 Additional optical attachments such as filters lead to complicated systems, which in turn leads to higher costs and a degeneration of the wavelength selectivity because the filters themselves emit IR radiation.…”

Section: Introductionmentioning

confidence: 99%

Fano resonance in asymmetric-period two-dimensional plasmonic absorbers for dual-band uncooled infrared sensors

2016

View full text Add to dashboard Cite

, "Fano resonance in asymmetric-period twodimensional plasmonic absorbers for dual-band uncooled infrared sensors," Opt. Eng. 55 (11) Abstract. The spectral discrimination function of uncooled infrared (IR) sensors has significant advantages for applications such as fire detection, gas analysis, and biological analysis. We have previously demonstrated wavelength-selective uncooled IR sensors using two-dimensional plasmonic absorbers (2-D PLAs) over a wide range spanning the middle-and long-wavelength IR regions. 2-D PLAs are highly promising in terms of practical application due to the ease of fabrication and robustness for structural fluctuations. However, dual-band operation based on this concept has not yet been investigated, even though the ability to absorb in two different wavelength bands is extremely important for object recognition. Thus, a dual-band uncooled IR sensor was developed that employs Fano resonance in the plasmonic structures. To achieve dual-band detection, asymmetric periods in the orthogonal x -and y -directions were introduced into 2-D PLAs. Theoretical investigations predicted an asymmetric absorbance line shape dependent on the polarization attributed to Fano resonance. The spectral responsivity of the developed sensor demonstrated that selective detection occurred in two different wavelength bands due to polarization-dependent Fano resonance. The results obtained in this study will be applicable to the development of advanced sensors capable of multiband detection in the IR region.

show abstract

Photonic crystals for the application to spectrometers and wavelength filters

Cited by 14 publications

References 60 publications

Wavelength selective wideband uncooled infrared sensor using a two-dimensional plasmonic absorber

Wavelength selective wideband uncooled infrared sensor using a two-dimensional plasmonic absorber

Wavelength- or Polarization-Selective Thermal Infrared Detectors for Multi-Color or Polarimetric Imaging Using Plasmonics and Metamaterials

Fano resonance in asymmetric-period two-dimensional plasmonic absorbers for dual-band uncooled infrared sensors

Contact Info

Product

Resources

About