Coherent Thermal Emission from Large-Scale Suspended Nanomechanical Membranes
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913491980386304 |
|---|---|
| author | Sarkar, Mitradeep Haldankar, Rajashree Legendre, Julien Davidova, Gloria Bachtold, Adrian Papadakis, Georgia T. |
| author_facet | Sarkar, Mitradeep Haldankar, Rajashree Legendre, Julien Davidova, Gloria Bachtold, Adrian Papadakis, Georgia T. |
| contents | Thermal radiation is an abundant form of incoherent light. Generating coherent infrared light through incandescence promises a cheap alternative to the costly and epitaxially complex quantum cascade laser, however it remains a fundamental challenge. Previous approaches leveraged the spatial coherence of polaritonic excitations that occur in the thermal near-field, by diffracting them into the far-field zone via patterned micro- or nano-scatterers. This approach requires high-resolution lithography, is difficult to scale-up, and yields limited outcoupled radiation due to the intrinsically polarized nature of polaritons. We overcome these limitations and report coherent thermal emission through simple wave interference. We show that unpatterned, millimeter-scale, suspended nanomechanical membranes of SiC operate for both linear polarizations and exhibit antenna-like directionality without relying on the excitation of near-field polaritons. The ability to generate polarization-insensitive, narrowband and spatially coherent incandescent light without lithography at large scales paves the way towards democratizing thermal infrared technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_03045 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coherent Thermal Emission from Large-Scale Suspended Nanomechanical Membranes Sarkar, Mitradeep Haldankar, Rajashree Legendre, Julien Davidova, Gloria Bachtold, Adrian Papadakis, Georgia T. Optics Thermal radiation is an abundant form of incoherent light. Generating coherent infrared light through incandescence promises a cheap alternative to the costly and epitaxially complex quantum cascade laser, however it remains a fundamental challenge. Previous approaches leveraged the spatial coherence of polaritonic excitations that occur in the thermal near-field, by diffracting them into the far-field zone via patterned micro- or nano-scatterers. This approach requires high-resolution lithography, is difficult to scale-up, and yields limited outcoupled radiation due to the intrinsically polarized nature of polaritons. We overcome these limitations and report coherent thermal emission through simple wave interference. We show that unpatterned, millimeter-scale, suspended nanomechanical membranes of SiC operate for both linear polarizations and exhibit antenna-like directionality without relying on the excitation of near-field polaritons. The ability to generate polarization-insensitive, narrowband and spatially coherent incandescent light without lithography at large scales paves the way towards democratizing thermal infrared technologies. |
| title | Coherent Thermal Emission from Large-Scale Suspended Nanomechanical Membranes |
| topic | Optics |
| url | https://arxiv.org/abs/2409.03045 |