Taming parasitic thermal emission by Tamm plasmon polaritons for the mid-infrared

Pühringer, Gerald; Jakoby, Bernhard

doi:10.1364/josab.35.001490

Cited by 10 publications

(14 citation statements)

References 45 publications

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“…In analogy to the approaches in references [17,22], we employ a temperature models for the complex refractive index N=n+normalik of silver and silicon in order to account for the degradation of the reflectivity of the Si-Ag interface. The temperature was set to 500 K for the silicon slab waveguide and to 800 K for the materials (Si and Ag) located on the silicon nitride membrane.…”

Section: Design Methods and Theory Of Stp Resonatorsmentioning

confidence: 99%

“…In analogy to previous works, the emittance is enhanced to unity by variation of the individual layer thicknesses using a genetic-algorithm (GA) optimization [16,17]. Then, the structure is transformed into a slab design with finite height, which introduces light confinement by index guiding resulting in an incomplete bandgap (i.e., possibility of radiation) in the optical dispersion of the aperiodic bandgap structure.…”

Section: Introductionmentioning

confidence: 99%

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Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Pühringer¹,

Jakoby²

2019

Materials

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In this work, we propose and evaluate a concept for a selective thermal emitter based on Tamm plasmons suitable for monolithic on-chip integration and fabrication by conventional complementary metal oxide semiconductor (CMOS)-compatible processes. The original design of Tamm plasmon structures features a purely one-dimensional array of layers including a Bragg mirror and a metal. The resonant field enhancement next to the metal interface corresponding to optical Tamm states leads to resonant emission at the target wavelength, which depends on the lateral dimensions of the bandgap structure. We demonstrate the application of this concept to a silicon slab structure instead of deploying extended one dimensional layers thus enabling coupling into slab waveguides. Here we focus on the mid-infrared region for absorption sensing applications, particularly on the CO2 absorption line at 4.26 µm as an example. The proposed genetic-algorithm optimization process utilizing the finite-element method and the transfer-matrix method reveals resonant absorption in case of incident modes guided by the slab and, by Kirchhoff’s law, corresponds to emittance up to 90% depending on different choices of the silicon slab height when the structure is used as a thermal emitter. Although we focus on the application as an emitter in the present work, the structure can also be operated as an absorber providing adjusted lateral dimensions and/or exchanged materials (e.g., a different choice for metal).

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Section: Design Methods and Theory Of Stp Resonatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Pühringer¹,

Jakoby²

2019

Materials

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“…As a result, we set the air gap width 5 adjacent to the cavity region to 200 nm, which is a feasible limit for a modern deep-reactive-ion etching. Although this represents a significant deviation from a distributed Bragg reflector (DBR), aperiodic configurations are also well known for providing excellent performance as a distributed reflector [2,8]. The lengths of the other air/silicon regions 1 − 4 are initially set to quarter wavelength thickness resembling an ordinary DBR.…”

Section: Properties Of Tpp Structures and Design Considerationsmentioning

confidence: 99%

“…It was set up in a similar way as in Refs. [2,8]. The stack configuration yielding the best results for slab structures together with unity absorptance in the 1D case (see inset of Figure 1a) was used for further optimization for a maximum absorption performance at the target resonance wavelength by carefully modifying the individual widths 1-6 (with the exception of 5) for every slab height .…”

Section: Properties Of Tpp Structures and Design Considerationsmentioning

confidence: 99%

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Design and Numerical Evaluation of a Highly Selective CMOS-Compatible Mid-IR Thermal Emitter/Detector Structure Using Optical Tamm-States

Pühringer

Jakoby

2018

Eurosensors 2018

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In this work we propose and evaluate a concept for a selective thermal emitter suitable for monolithic on-chip integration suitable for fabrication by conventional CMOS-compatible processes. The concept is based on our recently presented work on vertical-cavity enhanced resonant thermal emission (VERTE). Here we present the application of this concept to a slab waveguide structure, instead of depositing extended dielectric layers forming a one-dimensional photonic crystal. We optimize the dimension by certain design considerations and geneticalgorithm optimization and demonstrate effective absorbing/emitting properties (depending on different slab heights) of such a low-cost structure by exciting so-called optical Tamm-states on the metal-dielectric interface.

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Advanced mid-infrared lightsources above and beyond lasers and their analytical utility

Hlavatsch

Mizaikoff

2022

ANAL. SCI.

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In the mid-infrared (MIR) spectral range, a series of applications have successfully been shown in the fields of sensing, security and defense, energy conservation, and communications. In particular, rapid and recent developments in MIR light sources have significantly increased the interest in developing MIR optical systems, sensors, and diagnostics especially for chem/bio detection schemes and molecular analytical application scenarios. In addition to the advancements in optoelectronic light sources, and especially quantum and interband cascade lasers (QCLs, ICLs) largely driving the increasing interest in the MIR regime, also thermal emitters and light emitting diodes (LEDs) offer opportunities to alternatively fill current gaps in spectral coverage specifically with analytical applications and chem/bio sensing/diagnostics in the focus. As MIR laser technology has been broadly covered in a variety of articles, the present review aims at summarizing recent developments in MIR non-laser light sources highlighting their analytical utility in the MIR wavelength range. Graphical abstract

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Taming parasitic thermal emission by Tamm plasmon polaritons for the mid-infrared

Cited by 10 publications

References 45 publications

Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Design and Numerical Evaluation of a Highly Selective CMOS-Compatible Mid-IR Thermal Emitter/Detector Structure Using Optical Tamm-States

Advanced mid-infrared lightsources above and beyond lasers and their analytical utility

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