{"title":"Hyperspectral photoluminescence imaging as a tool to study defects in silicon solar cell materials (Conference Presentation)","authors":"I. Burud","doi":"10.1117/12.2521469","DOIUrl":"https://doi.org/10.1117/12.2521469","url":null,"abstract":"Hyperspectral imaging in the SWIR wavelength region (1000 nm – 2500 nm) makes it possible to map mechanisms for recombination of photogenerated charge carriers in semiconductors. These mechanisms are linked to imperfections and impurities and lead to decreased performance in solar cells. The hyperspectral camera is mounted with a line laser at wavelength 808 nm, an energy high enough to excite electrons from the valence band to the conduction band in the Silicon material. The camera records radiative photoluminescence from the material, both the Silicon band to band recombination as well as recombinations from trapped electrons due to imperfections. In combination with advanced multivariate techniques for data analysis, this technology have been used to study defects in both multicrystalline and monocrystalline wafers and solar cells. Some of the mapped defects have been linked to well known mechanisms that could previously only be studied by destructive and time consuming methods. So far this technique has only been explored in research laboratories. The goal is however to be able to use this in line in solar cell processing. In this presentation it will also be discussed how this technology can be used to map degradation of outdoor solar panels.","PeriodicalId":242044,"journal":{"name":"Image Sensing Technologies: Materials, Devices, Systems, and Applications VI","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130352981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spectrally-resolved interferometric imaging by very large-scale silicon-photonic integrated circuits (VLSPIC) (Conference Presentation)","authors":"S. Yoo","doi":"10.1117/12.2522152","DOIUrl":"https://doi.org/10.1117/12.2522152","url":null,"abstract":"This paper discusses design, fabrication, and experimental demonstration of very large-scale silicon photonic integrated circuits (VLSPIC) that include spectrometers, interferometers, and phase tuners to reconstruct spectrally resolved images. Recently-fabricated VLSPICs included 18 spectral bins and 12 baselines, successfully reconstructing reference images.","PeriodicalId":242044,"journal":{"name":"Image Sensing Technologies: Materials, Devices, Systems, and Applications VI","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126247014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hyperspectral microscope imaging for foodborne pathogens detection and classification (Conference Presentation)","authors":"B. Park, M. Eady","doi":"10.1117/12.2518374","DOIUrl":"https://doi.org/10.1117/12.2518374","url":null,"abstract":"","PeriodicalId":242044,"journal":{"name":"Image Sensing Technologies: Materials, Devices, Systems, and Applications VI","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133153429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Highly-integrated optical phased-locked loop for LiDAR/remote sensing (Conference Presentation)","authors":"S. Arafin","doi":"10.1117/12.2522424","DOIUrl":"https://doi.org/10.1117/12.2522424","url":null,"abstract":"Recently, highly-integrated optical phase-locked loops (OPLLs) have been demonstrated for a number of potential applications including coherent optical communications, light detection and ranging (LiDAR) and frequency metrology. Another particularly interesting application is an optical frequency synthesis (OFS) for which OPLL-based offset locking is recently considered to be one of the most attractive techniques. There have been extensive ongoing research efforts to develop low-cost, compact, robust and power-efficient OFS systems using this OPLL-based technology. In this talk, I will discuss about a power-efficient and highly-integrated photonic system, producing low phase-noise coherent optical signal with a wavelength range of 23 nm in the C-band. In fact, the experimental results on the recently-developed highlyintegrated OFS based on OPLL technology will be presented. The system includes novel InP-photonic integrated coherent receiver circuits that consume record-low (approximately 184 mW) electrical power. By employing a combination of photonic and electronic integration, this low-cost highly-integrated InP-based OFS with low-energy consumption exhibits both compact size and exceptional stability. This work is a major step towards demonstration of the true chip-scale optical frequency synthesizer with programmable <1 Hz frequency resolution, <1 cm3 volume, and <1 W electrical power consumption.","PeriodicalId":242044,"journal":{"name":"Image Sensing Technologies: Materials, Devices, Systems, and Applications VI","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124414426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Rubin, Gabriele D'Aversa, W. T. Chen, Zhujun Shi, F. Capasso
{"title":"Polarization control and sensing with metasurfaces (Conference Presentation)","authors":"N. Rubin, Gabriele D'Aversa, W. T. Chen, Zhujun Shi, F. Capasso","doi":"10.1117/12.2517042","DOIUrl":"https://doi.org/10.1117/12.2517042","url":null,"abstract":"","PeriodicalId":242044,"journal":{"name":"Image Sensing Technologies: Materials, Devices, Systems, and Applications VI","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134399347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}