Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides
Color centers in solids, such as nitrogen-vacancy (NV) centers in diamonds, have gained significant attention in recent years due to their exceptional properties for quantum sensing. In this work, we demonstrate an NV center-based temperature sensor integrated into an optical waveguide to enable int...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-07-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/25/13/4123 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839631503404826624 |
|---|---|
| author | Yifan Zhao Shihan Ding Shuo Wang Yiming Hu Hongliang Liu Zhen Shang Yongjian Gu |
| author_facet | Yifan Zhao Shihan Ding Shuo Wang Yiming Hu Hongliang Liu Zhen Shang Yongjian Gu |
| author_sort | Yifan Zhao |
| collection | DOAJ |
| description | Color centers in solids, such as nitrogen-vacancy (NV) centers in diamonds, have gained significant attention in recent years due to their exceptional properties for quantum sensing. In this work, we demonstrate an NV center-based temperature sensor integrated into an optical waveguide to enable internal temperature sensing. A surface-cladding optical waveguide was fabricated in a diamond wafer containing NV centers using femtosecond laser direct writing. By analyzing the resonant peaks of optically detected magnetic resonance (ODMR) spectra, we established a precise correlation between temperature changes induced by the pump laser and shifts in the ODMR peak positions. This approach enabled temperature monitoring with a sensitivity of 1.1 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>mK</mi><mo>/</mo><msqrt><mi>Hz</mi></msqrt></mrow></semantics></math></inline-formula>. These results highlight the significant potential of color centers in solids for non-contact, micro-scale temperature monitoring. |
| format | Article |
| id | doaj-art-1f0d6923b57f4c3a8cda1f39a79f4938 |
| institution | Matheson Library |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-1f0d6923b57f4c3a8cda1f39a79f49382025-07-11T14:43:26ZengMDPI AGSensors1424-82202025-07-012513412310.3390/s25134123Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical WaveguidesYifan Zhao0Shihan Ding1Shuo Wang2Yiming Hu3Hongliang Liu4Zhen Shang5Yongjian Gu6College of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, ChinaInstitute of Modern Optics, Nankai University, Tianjin 300350, ChinaCollege of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, ChinaInstitute of Modern Optics, Nankai University, Tianjin 300350, ChinaCollege of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, ChinaColor centers in solids, such as nitrogen-vacancy (NV) centers in diamonds, have gained significant attention in recent years due to their exceptional properties for quantum sensing. In this work, we demonstrate an NV center-based temperature sensor integrated into an optical waveguide to enable internal temperature sensing. A surface-cladding optical waveguide was fabricated in a diamond wafer containing NV centers using femtosecond laser direct writing. By analyzing the resonant peaks of optically detected magnetic resonance (ODMR) spectra, we established a precise correlation between temperature changes induced by the pump laser and shifts in the ODMR peak positions. This approach enabled temperature monitoring with a sensitivity of 1.1 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>mK</mi><mo>/</mo><msqrt><mi>Hz</mi></msqrt></mrow></semantics></math></inline-formula>. These results highlight the significant potential of color centers in solids for non-contact, micro-scale temperature monitoring.https://www.mdpi.com/1424-8220/25/13/4123optical waveguidefemtosecond laser direct writingnitrogen-vacancy centerstemperature sensing |
| spellingShingle | Yifan Zhao Shihan Ding Shuo Wang Yiming Hu Hongliang Liu Zhen Shang Yongjian Gu Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides Sensors optical waveguide femtosecond laser direct writing nitrogen-vacancy centers temperature sensing |
| title | Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides |
| title_full | Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides |
| title_fullStr | Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides |
| title_full_unstemmed | Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides |
| title_short | Integrated NV Center-Based Temperature Sensor for Internal Thermal Monitoring in Optical Waveguides |
| title_sort | integrated nv center based temperature sensor for internal thermal monitoring in optical waveguides |
| topic | optical waveguide femtosecond laser direct writing nitrogen-vacancy centers temperature sensing |
| url | https://www.mdpi.com/1424-8220/25/13/4123 |
| work_keys_str_mv | AT yifanzhao integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT shihanding integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT shuowang integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT yiminghu integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT hongliangliu integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT zhenshang integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides AT yongjiangu integratednvcenterbasedtemperaturesensorforinternalthermalmonitoringinopticalwaveguides |