Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots
The performance of short-wavelength infrared (SWIR) cameras in the visible and ultraviolet (UV) regions is limited by the absorption of high-energy photons in inactive regions of the imaging array. Dual-band UV-SWIR imaging can be achieved by using PbS colloidal quantum dots (CQD) to downshift incid...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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SPIE
2013
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| Online Access: | http://hdl.handle.net/1721.1/81338 https://orcid.org/0000-0003-4422-3313 https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-0607-9835 |
| _version_ | 1811075528022556672 |
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| author | Geyer, Scott Mitchell Bawendi, Moungi G. Scherer, Jennifer M. Jack, Michael D. Jaworski, Frank B. |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Geyer, Scott Mitchell Bawendi, Moungi G. Scherer, Jennifer M. Jack, Michael D. Jaworski, Frank B. |
| author_sort | Geyer, Scott Mitchell |
| collection | MIT |
| description | The performance of short-wavelength infrared (SWIR) cameras in the visible and ultraviolet (UV) regions is limited by the absorption of high-energy photons in inactive regions of the imaging array. Dual-band UV-SWIR imaging can be achieved by using PbS colloidal quantum dots (CQD) to downshift incident UV light to the SWIR band. The CQD downshifting layer has minimal impact on the SWIR imaging performance and greatly increases the UV sensitivity of an InGaAs camera. A dual-lens design in which the QDs are incorporated on a removable substrate is demonstrated, which provides UV sensitivity without modification of the InGaAs camera focal plane array. A single-lens design in which the QDs are deposited directly on the focal plane array is demonstrated using both a standard InGaAs focal plane and a substrate-thinned focal plane. Higher UV resolution for the substrate-thinned focal plane is observed. |
| first_indexed | 2024-09-23T10:07:42Z |
| format | Article |
| id | mit-1721.1/81338 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:07:42Z |
| publishDate | 2013 |
| publisher | SPIE |
| record_format | dspace |
| spelling | mit-1721.1/813382022-09-26T15:53:39Z Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots Geyer, Scott Mitchell Bawendi, Moungi G. Scherer, Jennifer M. Jack, Michael D. Jaworski, Frank B. Massachusetts Institute of Technology. Department of Chemistry Bawendi, Moungi G. Geyer, Scott Mitchell Scherer, Jennifer M. The performance of short-wavelength infrared (SWIR) cameras in the visible and ultraviolet (UV) regions is limited by the absorption of high-energy photons in inactive regions of the imaging array. Dual-band UV-SWIR imaging can be achieved by using PbS colloidal quantum dots (CQD) to downshift incident UV light to the SWIR band. The CQD downshifting layer has minimal impact on the SWIR imaging performance and greatly increases the UV sensitivity of an InGaAs camera. A dual-lens design in which the QDs are incorporated on a removable substrate is demonstrated, which provides UV sensitivity without modification of the InGaAs camera focal plane array. A single-lens design in which the QDs are deposited directly on the focal plane array is demonstrated using both a standard InGaAs focal plane and a substrate-thinned focal plane. Higher UV resolution for the substrate-thinned focal plane is observed. Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (W911NF-07-D-004) American Society for Engineering Education. National Defense Science and Engineering Graduate Fellowship 2013-10-07T12:57:32Z 2013-10-07T12:57:32Z 2013-09 2013-07 Article http://purl.org/eprint/type/JournalArticle 1934-2608 http://hdl.handle.net/1721.1/81338 Geyer, Scott M. “Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots.” Journal of Nanophotonics 7, no. 1 (January 10, 2013): 073083. © 2013 Society of Photo-Optical Instrumentation Engineers https://orcid.org/0000-0003-4422-3313 https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-0607-9835 en_US http://dx.doi.org/10.1117/1.jnp.7.073083 Journal of Nanophotonics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf SPIE SPIE |
| spellingShingle | Geyer, Scott Mitchell Bawendi, Moungi G. Scherer, Jennifer M. Jack, Michael D. Jaworski, Frank B. Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title | Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title_full | Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title_fullStr | Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title_full_unstemmed | Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title_short | Dual-band ultraviolet-short-wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| title_sort | dual band ultraviolet short wavelength infrared imaging via luminescent downshifting with colloidal quantum dots |
| url | http://hdl.handle.net/1721.1/81338 https://orcid.org/0000-0003-4422-3313 https://orcid.org/0000-0003-2220-4365 https://orcid.org/0000-0002-0607-9835 |
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