Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators
A novel room‐temperature photodetector based on a silica‐microsphere optical resonator operating from the mid‐infrared to the terahertz spectral region is reported. The sensor relies on a free‐space visible laser whose frequency is locked to the center of a whispering‐gallery mode (WGM). The devised...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2022-12-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202200147 |
| _version_ | 1811178295314612224 |
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| author | Davide D'Ambrosio Marialuisa Capezzuto Roberto Aiello Maria Giulia Delli Santi Alessia Sorgi Pietro Malara Saverio Avino Antonio Giorgini Pasquale Maddaloni Luigi Consolino Miriam Serena Vitiello Paolo De Natale Gianluca Gagliardi |
| author_facet | Davide D'Ambrosio Marialuisa Capezzuto Roberto Aiello Maria Giulia Delli Santi Alessia Sorgi Pietro Malara Saverio Avino Antonio Giorgini Pasquale Maddaloni Luigi Consolino Miriam Serena Vitiello Paolo De Natale Gianluca Gagliardi |
| author_sort | Davide D'Ambrosio |
| collection | DOAJ |
| description | A novel room‐temperature photodetector based on a silica‐microsphere optical resonator operating from the mid‐infrared to the terahertz spectral region is reported. The sensor relies on a free‐space visible laser whose frequency is locked to the center of a whispering‐gallery mode (WGM). The devised scheme automatically tracks any small change in the microresonator's size and refractive index that occurs upon illumination with radiation absorbed by silica. In this way, direct detection of quantum‐cascade laser beams around 4.3 and 111 μm wavelengths is shown, down to minimum noise‐equivalent power levels of ≈1 pW √Hz−1 with a dynamic range >100 dB. The microsphere resonator is then exploited, for the first time, as a photodetector in absorption spectroscopy of the 12CO2 fundamental ro‐vibrational band and of very‐weak 13CH3OH rotational lines. |
| first_indexed | 2024-04-11T06:16:15Z |
| format | Article |
| id | doaj.art-4809517d99b047abb798ae7e83b47377 |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-11T06:16:15Z |
| publishDate | 2022-12-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-4809517d99b047abb798ae7e83b473772022-12-22T04:41:02ZengWiley-VCHAdvanced Photonics Research2699-92932022-12-01312n/an/a10.1002/adpr.202200147Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode MicroresonatorsDavide D'Ambrosio0Marialuisa Capezzuto1Roberto Aiello2Maria Giulia Delli Santi3Alessia Sorgi4Pietro Malara5Saverio Avino6Antonio Giorgini7Pasquale Maddaloni8Luigi Consolino9Miriam Serena Vitiello10Paolo De Natale11Gianluca Gagliardi12Consiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto di Nanoscienze (NANO) p.zza S. Silvestro 12 56127 Pisa ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyConsiglio Nazionale delle Ricerche Istituto Nazionale di Ottica (INO) via Campi Flegrei 34 Comprensorio A. Olivetti I-80078 Pozzuoli ItalyA novel room‐temperature photodetector based on a silica‐microsphere optical resonator operating from the mid‐infrared to the terahertz spectral region is reported. The sensor relies on a free‐space visible laser whose frequency is locked to the center of a whispering‐gallery mode (WGM). The devised scheme automatically tracks any small change in the microresonator's size and refractive index that occurs upon illumination with radiation absorbed by silica. In this way, direct detection of quantum‐cascade laser beams around 4.3 and 111 μm wavelengths is shown, down to minimum noise‐equivalent power levels of ≈1 pW √Hz−1 with a dynamic range >100 dB. The microsphere resonator is then exploited, for the first time, as a photodetector in absorption spectroscopy of the 12CO2 fundamental ro‐vibrational band and of very‐weak 13CH3OH rotational lines.https://doi.org/10.1002/adpr.202200147infrared detectionmolecular spectroscopyoptical microresonatorTHz detectionwhispering-gallery mode |
| spellingShingle | Davide D'Ambrosio Marialuisa Capezzuto Roberto Aiello Maria Giulia Delli Santi Alessia Sorgi Pietro Malara Saverio Avino Antonio Giorgini Pasquale Maddaloni Luigi Consolino Miriam Serena Vitiello Paolo De Natale Gianluca Gagliardi Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators Advanced Photonics Research infrared detection molecular spectroscopy optical microresonator THz detection whispering-gallery mode |
| title | Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators |
| title_full | Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators |
| title_fullStr | Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators |
| title_full_unstemmed | Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators |
| title_short | Infrared‐to‐THz Detection and Spectroscopy with Whispering‐Gallery‐Mode Microresonators |
| title_sort | infrared to thz detection and spectroscopy with whispering gallery mode microresonators |
| topic | infrared detection molecular spectroscopy optical microresonator THz detection whispering-gallery mode |
| url | https://doi.org/10.1002/adpr.202200147 |
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