Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings
High-finesse optical cavities placed under vacuum are foundational platforms in quantum information science with photons and atoms. We study the vacuum-induced degradation of high-finesse optical cavities with mirror coatings composed of SiO[subscript 2]-Ta[subscript 2]O[subscript 5] dielectric stac...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Optical Society of America
2015
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| Online Access: | http://hdl.handle.net/1721.1/99933 https://orcid.org/0000-0001-7296-523X https://orcid.org/0000-0002-7054-2310 https://orcid.org/0000-0001-8586-4999 https://orcid.org/0000-0001-5193-2711 https://orcid.org/0000-0002-9786-0538 https://orcid.org/0000-0001-6155-9463 https://orcid.org/0000-0001-8276-8256 https://orcid.org/0000-0002-8069-8327 https://orcid.org/0000-0002-7100-0847 |
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| author | Gangloff, Dorian Shi, Molu Wu, Tailin Bylinskii, Alexei Braverman, Boris Nichols, Rosanna Li, Junru Aichholz, Kai Cetina, Marko Karpa, Leon Gutierrez, Michael Steven Jelenkovic, Branislav Vuletic, Vladan Chuang, Isaac L. |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Gangloff, Dorian Shi, Molu Wu, Tailin Bylinskii, Alexei Braverman, Boris Nichols, Rosanna Li, Junru Aichholz, Kai Cetina, Marko Karpa, Leon Gutierrez, Michael Steven Jelenkovic, Branislav Vuletic, Vladan Chuang, Isaac L. |
| author_sort | Gangloff, Dorian |
| collection | MIT |
| description | High-finesse optical cavities placed under vacuum are foundational platforms in quantum information science with photons and atoms. We study the vacuum-induced degradation of high-finesse optical cavities with mirror coatings composed of SiO[subscript 2]-Ta[subscript 2]O[subscript 5] dielectric stacks, and present methods to protect these coatings and to recover their initial low loss levels. For separate coatings with reflectivities centered at 370 nm and 422 nm, a vacuum-induced continuous increase in optical loss occurs if the surface-layer coating is made of Ta[subscript 2]O[subscript 5], while it does not occur if it is made of SiO[subscript 2]. The incurred optical loss can be reversed by filling the vacuum chamber with oxygen at atmospheric pressure, and the recovery rate can be strongly accelerated by continuous laser illumination at 422 nm. Both the degradation and the recovery processes depend strongly on temperature. We find that a 1 nm-thick layer of SiO[subscript 2] passivating the Ta[subscript 2]O[subscript 5] surface layer is sufficient to reduce the degradation rate by more than a factor of 10, strongly supporting surface oxygen depletion as the primary degradation mechanism. |
| first_indexed | 2024-09-23T08:14:24Z |
| format | Article |
| id | mit-1721.1/99933 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:14:24Z |
| publishDate | 2015 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/999332022-09-30T08:30:43Z Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings Gangloff, Dorian Shi, Molu Wu, Tailin Bylinskii, Alexei Braverman, Boris Nichols, Rosanna Li, Junru Aichholz, Kai Cetina, Marko Karpa, Leon Gutierrez, Michael Steven Jelenkovic, Branislav Vuletic, Vladan Chuang, Isaac L. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Research Laboratory of Electronics MIT-Harvard Center for Ultracold Atoms Gangloff, Dorian Shi, Molu Wu, Tailin Bylinskii, Alexei Braverman, Boris Gutierrez, Michael Steven Nichols, Rosanna Li, Junru Aichholz, Kai Cetina, Marko Karpa, Leon Chuang, Isaac Vuletic, Vladan High-finesse optical cavities placed under vacuum are foundational platforms in quantum information science with photons and atoms. We study the vacuum-induced degradation of high-finesse optical cavities with mirror coatings composed of SiO[subscript 2]-Ta[subscript 2]O[subscript 5] dielectric stacks, and present methods to protect these coatings and to recover their initial low loss levels. For separate coatings with reflectivities centered at 370 nm and 422 nm, a vacuum-induced continuous increase in optical loss occurs if the surface-layer coating is made of Ta[subscript 2]O[subscript 5], while it does not occur if it is made of SiO[subscript 2]. The incurred optical loss can be reversed by filling the vacuum chamber with oxygen at atmospheric pressure, and the recovery rate can be strongly accelerated by continuous laser illumination at 422 nm. Both the degradation and the recovery processes depend strongly on temperature. We find that a 1 nm-thick layer of SiO[subscript 2] passivating the Ta[subscript 2]O[subscript 5] surface layer is sufficient to reduce the degradation rate by more than a factor of 10, strongly supporting surface oxygen depletion as the primary degradation mechanism. National Science Foundation (U.S.). Center for Ultracold Atoms United States. Intelligence Advanced Research Projects Activity. Multi-Qubit Coherent Operations Program 2015-11-16T13:08:46Z 2015-11-16T13:08:46Z 2015-07 2015-06 Article http://purl.org/eprint/type/JournalArticle 1094-4087 http://hdl.handle.net/1721.1/99933 Gangloff, Dorian, Molu Shi, Tailin Wu, Alexei Bylinskii, Boris Braverman, Michael Gutierrez, Rosanna Nichols, et al. “Preventing and Reversing Vacuum-Induced Optical Losses in High-Finesse Tantalum (V) Oxide Mirror Coatings.” Optics Express 23, no. 14 (2015): 18014. https://orcid.org/0000-0001-7296-523X https://orcid.org/0000-0002-7054-2310 https://orcid.org/0000-0001-8586-4999 https://orcid.org/0000-0001-5193-2711 https://orcid.org/0000-0002-9786-0538 https://orcid.org/0000-0001-6155-9463 https://orcid.org/0000-0001-8276-8256 https://orcid.org/0000-0002-8069-8327 https://orcid.org/0000-0002-7100-0847 en_US http://dx.doi.org/10.1364/oe.23.018014 Optics Express Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Optical Society of America arXiv |
| spellingShingle | Gangloff, Dorian Shi, Molu Wu, Tailin Bylinskii, Alexei Braverman, Boris Nichols, Rosanna Li, Junru Aichholz, Kai Cetina, Marko Karpa, Leon Gutierrez, Michael Steven Jelenkovic, Branislav Vuletic, Vladan Chuang, Isaac L. Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title | Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title_full | Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title_fullStr | Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title_full_unstemmed | Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title_short | Preventing and reversing vacuum-induced optical losses in high-finesse tantalum (V) oxide mirror coatings |
| title_sort | preventing and reversing vacuum induced optical losses in high finesse tantalum v oxide mirror coatings |
| url | http://hdl.handle.net/1721.1/99933 https://orcid.org/0000-0001-7296-523X https://orcid.org/0000-0002-7054-2310 https://orcid.org/0000-0001-8586-4999 https://orcid.org/0000-0001-5193-2711 https://orcid.org/0000-0002-9786-0538 https://orcid.org/0000-0001-6155-9463 https://orcid.org/0000-0001-8276-8256 https://orcid.org/0000-0002-8069-8327 https://orcid.org/0000-0002-7100-0847 |
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