Circularly Polarized Laser Emission from an Electrically Pumped Chiral Microcavity

Максимов, А. А.; Filatov, E. V.; Tartakovskii, I. I.; Kulakovskiĭ, V. D.; Tikhodeev, S. G.; Schneider, C.; Höfling, Sven

doi:10.1103/physrevapplied.17.l021001

Cited by 19 publications

(4 citation statements)

References 42 publications

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“…Circular polarization-preserving mirrors have been fabricated at microwave 18 and visible frequencies 52 . Use of polarization-preserving mirrors allow construction of 3D chiral cavities (in other literature, simply referred to as “chiral cavities”), with several geometries having been proposed 4 , 58 , 59 , and demonstrated at visible 60 and microwave frequencies 18 , 61 . Such 3D chiral cavities possess helical-like modes, can potentially no longer possess nodes and antinodes, and are capable of accumulating the optical rotation induced by molecules exhibiting natural chirality over multiple passes 62 .…”

Section: Discussionmentioning

confidence: 99%

A 2D chiral microcavity based on apparent circular dichroism

Chen,

Salij,

Parrish

et al. 2024

Nat Commun

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Engineering asymmetric transmission between left-handed and right-handed circularly polarized light in planar Fabry–Pérot (FP) microcavities would enable a variety of chiral light-matter phenomena, with applications in spintronics, polaritonics, and chiral lasing. Such symmetry breaking, however, generally requires Faraday rotators or nanofabricated polarization-preserving mirrors. We present a simple solution requiring no nanofabrication to induce asymmetric transmission in FP microcavities, preserving low mode volumes by embedding organic thin films exhibiting apparent circular dichroism (ACD); an optical phenomenon based on 2D chirality. Importantly, ACD interactions are opposite for counter-propagating light. Consequently, we demonstrated asymmetric transmission of cavity modes over an order of magnitude larger than that of the isolated thin film. Through circular dichroism spectroscopy, Mueller matrix ellipsometry, and simulation using theoretical scattering matrix methods, we characterize the spatial, spectral, and angular chiroptical responses of this 2D chiral microcavity.

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Section: Discussionmentioning

confidence: 99%

A 2D chiral microcavity based on apparent circular dichroism

Chen,

Salij,

Parrish

et al. 2024

Nat Commun

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“…Without QWPs, new concepts for generating the CP light must be built into the implementation of light sources at the device level. So far, the CP light sources have been demonstrated with the aids of materials, structures, and operation conditions in conjunctions with the nonreciprocity, [7,14] chirality, [8][9][10]12,20] quasi-bound states in the continuum, [21] or exceptional points. [19,22] As for passive devices, metasurfaces capable of manipulating the polarization state of incident waves may also help the conversion of CP lights.…”

Section: Doi: 101002/lpor202300574mentioning

confidence: 99%

“…There are increasing usages of optical fields carrying nonvanishing angular momentum in classical, quantum, and biomedical applications. [1][2][3][4][5][6] Among various optical fields with angular momenta, [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] the circularly-polarized (CP) light is most commonly utilized due to its spatially bright field profile and simplicity in angular-momentum compositions. In views of system integrations, incorporating light sources at the chip level broadens and enhances functionalities of photonic integrated circuits (PICs).…”

Section: Introductionmentioning

confidence: 99%

Circularly‐Polarized Laser Equivalent to Two Phase‐Shifted Linearly‐Polarized Sources

Tsai,

Hsieh,

Cheng

et al. 2023

Laser & Photonics Reviews

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Compact circularly‐polarized (CP) light sources are important for chirality‐based applications at the chip level. The CP light is conventionally generated by passing the linearly‐polarized (LP) one through quarter wave plates which are too thick for packed integrations. In this work, the in‐plane submicron phase shifter substitutes the quarter‐wave plate in the creation of CP light. After the lasing field of a holed microdisk is coupled into the nearby waveguide and phase shifter, it is guided into two grating couplers that output orthogonally LP waves vertically. The two LP waves are phase‐shifted by and combine into the coherent CP radiation in the far‐field zone. Experimentally, the fabricated devices exhibit a degree of circular polarization as high as 74%. This device scheme is simple and effective in that it relies on no extrinsic materials, large‐area auxiliary structures, or specialized operation conditions critical for CP radiation. The compatibility issues for integrated photonic systems are of less concern in such schemes.

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“…Various nanostructures have been proposed to modulate the environment of the emitters to generate an enhanced emission output with specific polarization. [9][10][11][12][13][14][15][16] Among these structures, metasurfaces with periodic coupling effects are preferred. The periodic coupling has several variations, such as lattice resonance, [17,18] Fano resonance, [19,20] and bound states in the continuum (BICs).…”

Section: Introductionmentioning

confidence: 99%

Enhancing Circularly Polarized Emission by a Planar Chiral Dielectric Metasurface

Sun

Shi

et al. 2023

Advanced Optical Materials

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Circularly polarized emission (CPE) has attracted great interest in optoelectronics, biosensing, etc. Here, a resonant planar chiral dielectric metasurface that can be constructed to provide a preferable way for CPE is demonstrated. The planar metasurface is easy to fabricate, and the corresponding far-field circular polarization degree is extremely high and angle-insensitive. The designed metasurface is made of a periodic array of in-plane mirror-asymmetric silicon pillar dimers and supports a low-leakage chiral band-edge mode. Experimentally, the photoluminescence of a thin film of PbS/CdS quantum dots coated on such a metasurface is enhanced by 57 times with the far-field degree of circular polarization as high as 0.74. The planar platform provides a flexible and efficient way for manipulating CPE, in which other periodic coupling effects may also be adopted to enhance the light-matter interaction, such as quasi-bound states in the continuum and lattice resonance.

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Circularly Polarized Laser Emission from an Electrically Pumped Chiral Microcavity

Cited by 19 publications

References 42 publications

A 2D chiral microcavity based on apparent circular dichroism

A 2D chiral microcavity based on apparent circular dichroism

Circularly‐Polarized Laser Equivalent to Two Phase‐Shifted Linearly‐Polarized Sources

Enhancing Circularly Polarized Emission by a Planar Chiral Dielectric Metasurface

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