Bibliographic Details
| Title: |
High detectivity terahertz radiation sensing using frequency-noise-optimized nanomechanical resonators |
| Authors: |
Chang Zhang, Eeswar K. Yalavarthi, Mathieu Giroux, Wei Cui, Michel Stephan, Ali Maleki, Arnaud Weck, Jean-Michel Ménard, Raphael St-Gelais |
| Source: |
APL Photonics, Vol 9, Iss 12, Pp 126105-126105-8 (2024) |
| Publisher Information: |
AIP Publishing LLC, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Applied optics. Photonics |
| Subject Terms: |
Applied optics. Photonics, TA1501-1820 |
| More Details: |
We achieve high detectivity terahertz radiation sensing using a silicon nitride nanomechanical resonator functionalized with a metasurface absorber. High performances are achieved by striking a balance between the frequency stability of the resonator and its responsivity to absorbed radiation. Using this approach, we demonstrate a detectivity D*≈3.4×109cm⋅Hz/W and a noise equivalent power NEP≈36pW/Hz that outperform the best room-temperature on-chip THz detectors, such as pyroelectric detectors, while maintaining a comparable thermal response time of ≈200 ms. Our optical absorber consists of a 1-mm diameter metasurface, which currently enables a 0.5–3 THz detection range but can easily be scaled to other frequencies in the THz and infrared ranges. In addition to demonstrating high-performance terahertz radiation sensing, our work unveils an important fundamental trade-off between frequency stability and responsivity in thermal-based nanomechanical radiation sensors. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2378-0967 |
| Relation: |
https://doaj.org/toc/2378-0967 |
| DOI: |
10.1063/5.0238977 |
| Access URL: |
https://doaj.org/article/7546784950c74544b475c7f991b86878 |
| Accession Number: |
edsdoj.7546784950c74544b475c7f991b86878 |
| Database: |
Directory of Open Access Journals |
