{"title":"传感器采用光声吸收电池和两个垂直的声谐振器来分析多个分子。","authors":"Ismail Bayrakli, Hatice Akman, Filiz Sari","doi":"10.1364/AO.495411","DOIUrl":null,"url":null,"abstract":"<p><p>An ultra-high sensitivity multi-molecule sensor based on a photo-acoustic cell with two perpendicular acoustic resonators and a common microphone has been reported. In this work, a 4.5 µm distributed-feedback quantum cascade laser and a 1.5 µm external cavity diode laser (EC-DL) were used as optical excitation sources. Considering the spectral ranges of the lasers used, it is possible to analyze eight molecules (<i>Q</i> <i>C</i> <i>L</i>:<i>N</i> <sub>2</sub> <i>O</i> and <i>C</i> <i>O</i> <sub>2</sub>, EC-DL: <i>H</i> <sub>2</sub> <i>O</i>, <i>H</i> <sub>2</sub> <i>S</i>, <i>N</i> <i>H</i> <sub>3</sub>, CO, <i>C</i> <i>H</i> <sub>4</sub>, and <i>C</i> <sub>2</sub> <i>H</i> <sub>2</sub>). The <i>N</i> <sub>2</sub> <i>O</i> molecule was used to evaluate the performance of the photo-acoustic spectroscopy (PAS)-based sensor. A sensitivity of 0.073 V/ppm and a linearity of 0.99 were found by analyzing the PAS signal as a function of <i>N</i> <sub>2</sub> <i>O</i> concentration at 2237.656<i>c</i> <i>m</i> <sup>-1</sup>. The long-term performance of the sensor was determined by performing an Allan deviation analysis. A minimum detection limit of 9.8 ppb for 90 s integration time was achieved. The simultaneous multi-trace gas detection capability was verified by measurement of <i>N</i> <sub>2</sub> <i>O</i>, <i>C</i> <i>O</i> <sub>2</sub>, and <i>H</i> <sub>2</sub> <i>O</i>. Depending on the coarse/fine-tuning ranges of the lasers used, the number of molecules analyzed can be further increased. Such a sensor could provide simultaneous diagnosis of many diseases through an analysis of breath air and simultaneous monitoring of the most important greenhouse gases.</p>","PeriodicalId":8092,"journal":{"name":"Applied optics","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sensor using a photo-acoustic absorption cell with two perpendicular acoustic resonators to analyze multiple molecules.\",\"authors\":\"Ismail Bayrakli, Hatice Akman, Filiz Sari\",\"doi\":\"10.1364/AO.495411\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>An ultra-high sensitivity multi-molecule sensor based on a photo-acoustic cell with two perpendicular acoustic resonators and a common microphone has been reported. In this work, a 4.5 µm distributed-feedback quantum cascade laser and a 1.5 µm external cavity diode laser (EC-DL) were used as optical excitation sources. Considering the spectral ranges of the lasers used, it is possible to analyze eight molecules (<i>Q</i> <i>C</i> <i>L</i>:<i>N</i> <sub>2</sub> <i>O</i> and <i>C</i> <i>O</i> <sub>2</sub>, EC-DL: <i>H</i> <sub>2</sub> <i>O</i>, <i>H</i> <sub>2</sub> <i>S</i>, <i>N</i> <i>H</i> <sub>3</sub>, CO, <i>C</i> <i>H</i> <sub>4</sub>, and <i>C</i> <sub>2</sub> <i>H</i> <sub>2</sub>). The <i>N</i> <sub>2</sub> <i>O</i> molecule was used to evaluate the performance of the photo-acoustic spectroscopy (PAS)-based sensor. A sensitivity of 0.073 V/ppm and a linearity of 0.99 were found by analyzing the PAS signal as a function of <i>N</i> <sub>2</sub> <i>O</i> concentration at 2237.656<i>c</i> <i>m</i> <sup>-1</sup>. The long-term performance of the sensor was determined by performing an Allan deviation analysis. A minimum detection limit of 9.8 ppb for 90 s integration time was achieved. The simultaneous multi-trace gas detection capability was verified by measurement of <i>N</i> <sub>2</sub> <i>O</i>, <i>C</i> <i>O</i> <sub>2</sub>, and <i>H</i> <sub>2</sub> <i>O</i>. Depending on the coarse/fine-tuning ranges of the lasers used, the number of molecules analyzed can be further increased. Such a sensor could provide simultaneous diagnosis of many diseases through an analysis of breath air and simultaneous monitoring of the most important greenhouse gases.</p>\",\"PeriodicalId\":8092,\"journal\":{\"name\":\"Applied optics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2023-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied optics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1364/AO.495411\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied optics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1364/AO.495411","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
摘要
报道了一种基于两个垂直声谐振腔和一个普通传声器的光声电池的超高灵敏度多分子传感器。采用4.5µm分布反馈量子级联激光器和1.5µm外腔二极管激光器(EC-DL)作为光激发源。考虑到所使用激光器的光谱范围,可以分析8种分子(Q C L: n2o和c2o, EC-DL: h2o, h2s, nh3, CO, c4和c2h2o)。利用n2o分子来评价基于光声光谱(PAS)的传感器的性能。在2237.656c m -1时,PAS信号随氮浓度的变化,灵敏度为0.073 V/ppm,线性度为0.99。传感器的长期性能是通过执行艾伦偏差分析来确定的。在90 s的集成时间内实现了9.8 ppb的最小检测限。通过测量氮气、二氧化碳和h2o,验证了同时检测多痕量气体的能力。根据所使用激光器的粗/微调范围,可以进一步增加分析的分子数量。这种传感器可以通过分析呼吸空气和同时监测最重要的温室气体来同时诊断许多疾病。
Sensor using a photo-acoustic absorption cell with two perpendicular acoustic resonators to analyze multiple molecules.
An ultra-high sensitivity multi-molecule sensor based on a photo-acoustic cell with two perpendicular acoustic resonators and a common microphone has been reported. In this work, a 4.5 µm distributed-feedback quantum cascade laser and a 1.5 µm external cavity diode laser (EC-DL) were used as optical excitation sources. Considering the spectral ranges of the lasers used, it is possible to analyze eight molecules (QCL:N2O and CO2, EC-DL: H2O, H2S, NH3, CO, CH4, and C2H2). The N2O molecule was used to evaluate the performance of the photo-acoustic spectroscopy (PAS)-based sensor. A sensitivity of 0.073 V/ppm and a linearity of 0.99 were found by analyzing the PAS signal as a function of N2O concentration at 2237.656cm-1. The long-term performance of the sensor was determined by performing an Allan deviation analysis. A minimum detection limit of 9.8 ppb for 90 s integration time was achieved. The simultaneous multi-trace gas detection capability was verified by measurement of N2O, CO2, and H2O. Depending on the coarse/fine-tuning ranges of the lasers used, the number of molecules analyzed can be further increased. Such a sensor could provide simultaneous diagnosis of many diseases through an analysis of breath air and simultaneous monitoring of the most important greenhouse gases.
期刊介绍:
A highly regarded, premium quality must read for everyone in the optics field that offers applications-centered research in optics, photonics, imaging, and sensing. Topics germane to the journal include optical technology, lasers, photonics, environmental optics, and information processing.