Influence of substrate configuration on the angular. To provide a solid backgr ound, the general consideration for. Spiral antennacoupled microbridge structures for thz application jun gou1, tian zhang2, jun wang1 and yadong jiang1 abstract bolometer sensor is a good candidate for thz imaging due to its compact system, low cost, and wideband operation. Detection mechanisms in microstrip dipole antennacoupled. Antenna coupled infrared ir detectors attracted many authors for its promising room temperature operation, high speed, cmos. Since the 1940s, infrared ir detection and imaging at wavelengths in the two atmospheric windows of 3 to 5 and 8 to. Spiral antennacoupled microbridge structures for thz. Antennacoupled microcavity e nhanced thz photodetectors q fig. Dexter research center infrared thermopile detectors. The ohmic nature of the aunb contact determines the detection mechanism. University of central florida, 2002 a dissertation submitted in partial fulfillment of the requirements.
Read development of infrared detector with slot antennacoupled microbolometer, proceedings of spie on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Pdf infrared antennas coupled to lithographic fresnel. The extremely small size of plasmonic antennas has. Wide dynamic range, anglesensing, longwave infrared. Infrared detectors, antonio rogalski completely revised and reorganized while retaining the approachable style of its predecessor, this second edition addresses the latest developments in the science and technology of ir detection. These detectors have collection areas in the order of 10. Nearfield mapping of dipole nanoantennacoupled bolometers eric tucker,1 jeffrey d archangel,2 markus raschke,3 edgar briones,4 francisco javier gonzalez, 4 and glenn boreman1,a 1department of physics and optical science, university of north carolina at charlotte, charlotte, north carolina 28223, usa 2creol, the college of optics and photonics, university of central florida, orlando. We compare the detection mechanisms employed in microstrip dipole antennacoupled infrared detectors. This work focuses on the fabrication and response of dipole antennacoupled metaloxidemetal diode detectors to longwave infrared radiation. Lithographic antennacoupled infrared detec tors were. These structures contain a patterned metal antenna layer and dielectric backplane reflector in place of the usual metal phase grating.
Microstrip antennacoupled infrared detector request pdf. It is shown in general that for any detector characterized by a. Abdelrahman, mohd tafir mustaffa, ahmad shukri mustapa kamal, and saad m. Antenna coupled ir detectors appear to be the most promising candidate to achieve these requirements and has received substantial attention from research in. Development of infrared detector with slot antennacoupled. Mdpi publishes universiti sains malaysia, king saud university, and qassim university paper nanoantenna coupled infrared detector design by mohamed h. In this research work, i investigate theoretically and experimentally the antenna coupled microcavities for intersubband isb optoelectronic devices in the mid infrared mir and thz spectral. We have demonstrated a novel longwave infrared lwir detector that combines a dielectric resonator antenna with an antimonidebased absorber. The designs comprise square and circular fzpls with different numbers of fresnel zones working in transmissive or reflective modes designed to focus infrared energy on a squarespiral antenna connected to a microbolometer.
Modulation transfer function of antennacoupled infrared. Antenna length and polarization response of antenna. We propose a model of antennacoupled microbolometer to be included in an array for receiving and detecting long wave infrared lwir electromagnetic radiation. Thermal infrared detection using antennacoupled metal. The antenna and microstrip filters are modeled in aluminum thin film. In order to make antennacoupled detectors suited for infrared imaging systems, twodimensional 2d arrays have been fabricated that cover a whole pixel area with the penalty of increasing the noise figure of the detector and, therefore, reducing its performance. Individual antennacoupled ir bolometers have recently been demonstrated at wavelengths near 10. Optical antennas, infrared antennas, antennacoupled detectors, plasmonic antennas, nanoantennas. These devices utilize an asymmetric metaloxidemetal diode that is capable of rectifying infraredfrequency antenna currents without applied bias.
As proof of concept, a logarithmic planar antenna was designed and implemented in 90 nm bulk cmos technology and connected to the proposed detector. Antenna coupled detectors are based on the wave nature of the ir and thz radiation. The antenna is joined to microstrip bandpass filters thus forming a single metal structure to define the operation frequency band. Antennacoupled microcavities for enhanced infrared photodetection yuk nga chen,1 yanko todorov,1,a. In the case of backgroundlimited detectors, a feedhorncoupled array. Antennacoupled microbolometers are fast uncooled detectors with good sensitivity, directivity and can be polarization and wavelength selective. For the first time, the phased addition of multiple dipole antennas is demonstrated in the infrared, at a wavelength of 10. An approach for designing antenna coupled infrared detectors planar multimode detectors for wavelength selectivity, and dielectric coated salisbury screen and jaumann absorber for wavelength selectivity and broad band absorption is presented. Antennacoupled mom detectors antennabased mom sensors consist of two key elements. Pdf antenna coupled infrared detectors for wavelength. The detectors are fabricated on 150 mm silicon wafers that have low stress silicon nitride.
If focalplane arrays fpas of antennacoupled detectors can be fabricated, enhancement of irimager performance is possible. Antennacoupled microcavities for enhanced infrared photo. Antenna coupled infrared detectors for imaging applications. The detectors are fabricated using a single electron beam lithography step and a shadow evaporation technique. Antennacoupled infrared detectors, proceedings of spie. The reduction in nep is expected to be on the order of b. Based on infrared microbolometer structures, two kinds of antennacoupled microbridge structures are. Next, a nbsinnb trilayer is deposited with dc magnetron.
Nearfield mapping of dipole nanoantennacoupled bolometers. Fabrication, measurement and optimization by charles f. The farfield angular response pattern for dipole antennacoupled infrared detectors is investigated. Pdf infrared focal plane arrays irfpas are a critical component in advanced infrared imaging systems.
Most antennacoupled infrared detectors that use bolometers as the detection mechanism employ different metals to. The detector design was based on a sinuous antennacoupled tes bolometer array fabricated for polarbearsimons array and simons observatory 6, 7. An experimental infrared test bench used for determining the detection characteristics of these detectors is detailed, along with the figures of merit which have been measured and calculated. Since 1977, dexter research center has been the preferred provider of infrared thermopile detectors for science and industry. These antennas are suitable for integration with mixer diodes and infrared detectors. Exploitation of phasing effects between multiple antennas facilitates a wide range of applications, including syntheticaperture radar, beam forming, and beam scanning. Most antenna coupled detectors in the infrared rely on a metal resonator structure. Antennacoupled microcavity enhanced thz photodetectors. Devices are fabricated on both planar and hemispherical lens substrates. Abstract uncooled bolometric detectors used in infrared imaging systems have slow time constants 10 ms which makes them impractical for fastframerate applications. Pdf antenna coupled farinfraredthz detector in cmos. Antennacoupled infrared focal plane array by francisco javier gonzalez m. This is the first microstrip antenna structure proven to detect thermal infrared radiation. This was demonstrated with various designs for the detection of infrared radiation 1519.
A novel type of antennacoupled infrared detector consisting of a niobium microbolometer integrated with two microstrip patch antennas is reported. Nanoantenna coupled detectors have been introduced as a new member in the ir detector family. Antennacoupled infrared detectors harvard university. Pdf antennacoupled nanowire thermocouples for infrared. We demonstrate midinfrared detectors embedded into an array of doublemetal nanoantennas. Antennacoupled microbolometer farinfrared detectors have been built. Completely revised and reorganized while retaining the approachable style of the first edition, infrared detectors, second edition addresses the latest developments in the science and technology of infrared ir detection. Antennacoupled microbolometers are fast uncooled detectors with good sensitivity, directivity. Measurements indicate that the angular response can be tailored by.
The nanoantenna operating in the thz regime, is conceptually used to optimize the energy transfer from the freely propagating radiation field to a localized sensor which becomes much smaller than the operating wavelength,14. Osa influence of substrate configuration on the angular. In this paper a two dimensional array of antennacoupled microbolometers is demonstrated as an area receiver. When illuminated by normally incident planewave illumination, the antenna structures generate both evanescent. However, there are losses associated with metallic structures. By coupling a fresnel zone plate lens to a single element antennacoupled detector, infrared radiation can be collected over a typical pixel area and still keep low. Antennacoupled bolometer arrays for astrophysics james j. Pdf antennacoupled infrared detectors for imaging applications. Antennacoupled infrared and millimeterwave detectors.
Two dimensional array of antennacoupled microbolometers. A plasmonic antennacoupled superconducting nearir photon. By coupling a fresnel zone plate lens to a single element antennacoupled detector, infrared radiation can be collected over a typical pixel area and still keep lownoise levels. This invention relates to an area infrared receiver, and in particular to an area receiver with antennacoupled infrared sensors, which include two sets of parallel antenna arms disposed across contact pads and separated from the adjacent arms by bolometers and allows development of area reception from antennacoupled infrared sensors which are. Commercially fabricated antennacoupled transition edge sensor.
Highresponsivity midinfrared graphene detectors with. A theoretical study has been made of the use of antennas to couple radiation to infrared detectors. In order to make antennacoupled detectors suited for infrared imaging systems, twodimensional 2d arrays have been fabricated that cover a whole pixel area with the penalty of increasing the. Antennacoupled detectors are based on the wave nature of the ir and thz radiation. Several designs for fresnel zone plate lenses fzpls to be used in conjunction with antennacoupled infrared detectors have been fabricated and tested. Infrared antennas and resonant structures 2017 alda. Highresponsivity midinfrared graphene detectors with antennaenhanced photocarrier generation and collection. Subwavelength antimonide infrared detector coupled with. An infrared detector in standard soi technology is proposed that comprises an antennacoupled bolometer and a mosfet as a sensor. Pdf since the 1940s, infrared ir detection and imaging at wavelengths in the two atmospheric windows of 3 to 5 and 8 to 14. Area receiver with antennacoupled infrared sensors. Comparison of dipole, bowtie, spiral and logperiodic ir.
In chapter 3, the wavelength selective tiled microbolometers have been introduced for multispectral imaging. The performance of an antenna coupled device is compared with the one of. In our experiment, we designed graphene detectors with endtoend coupled antenna structures in a 2d array mbyn, m, n are the numbers of columns and rows, respectively to increase. It is shown in general that for any detector characterized by a specific detectivity d, noise. A first step in the design process is to analyze the imagequality potential of antennacoupled, fpabased imagers in terms of the modulation transfer function mtf. Design and simulation of an antennacoupled microbolometer.
Uncooled bolometric detectors used in infrared imaging systems have slow time constants 10 ms which makes them impractical for fastframerate applications. Design and simulation of an antennacoupled microbolometer at. For a halfwavelength dipole at the resonant frequency, a maximum in. Antenna coupled ir detectors appear to be the most promising.
Prober1 1yale university applied physics department, 15 prospect st. Directcurrent currentvoltage characteristics of symmetrical and asymmetrical antenna diodes are presented. Another approach to achieve multispectral imaging capabilities using microbolometer arrays would be the use of a stackablearray. Predicted performance for antennacoupled, quantumwell infrared photodetectors qwips is presented. Antenna structures for optical coupling in quantumwell. Phasedarray antennas are commonplace in the radiofrequency portion of the electromagnetic spectrum. Calculations of electromagnetic behaviors of the designs and verifications are presented. A plasmonic antennacoupled superconducting nearir photon detector faustin w. Antennacoupled infrared detectors for imaging applications. Antoni rogalski, an internationally recognized pioneer in the field, covers the comprehensive range of subjects necessary to understand modern ir detector. We also elucidate the mechanism of photoconductive gain in the graphene detectors and demonstrate midinfrared midir antennaassisted graphene detectors at room temperature with more than 200 times enhancement of responsivity. Detection mechanisms in microstrip dipole antennacoupled infrared.