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The temperature coefficient of the optical path length as a function of the temperature indifferent optical glasses

The temperature coefficient of the optical path length as a function of the temperature indifferent optical glasses
The temperature coefficient of the optical path length as a function of the temperature indifferent optical glasses
An interferometric technique was used to determine the temperature coefficient of the optical path length (dS/dT) as a function of the temperature in several optical glasses. The temperature range was between 25 °C and 180 °C. The studied samples included undoped and doped oxide glasses, such as low silica calcium aluminosilicate, phosphates, borates and also chalcogenides. The oxide glasses had dS/dT between 10 × 10-6 /K and 20 × 10-6 /K, while for the chalcogenides, these were around 70 × 10-6 /K. The results showed that dS/dT’s increased with the temperature in all samples. For samples doped with Nd the dS/dT values were found to be independent of concentration. On the other hand, for the phosphate glass doped with Cr, dS/dT increased about 5% when compared with the Nd doped one. In conclusion, the used interferometric method, which is a considerably simpler and a lower cost technique, and is a useful tool to measure dS/dT in semi-transparent glasses as a function of the composition and temperature.
0022-3093
240-244
Steimacher, A.
02a903c5-331d-44e9-a39b-7ae309bfd588
Medina, A.N.
48b023fe-45b3-4260-b712-d285fbfe0f73
Bento, A.C.
047cff12-23a2-46d2-b2a9-7d5f9a1a2d14
Rohling, J.H.
2dee7f29-08df-4965-a02b-2f133a6808ae
Baesso, M.L.
7ae321a0-7cba-4fc4-982d-409b5f6660a9
Reynoso, V.C.S.
81a3d3c5-36be-450a-9483-5886e3e5b98d
Lima, S.M.
812be72f-4727-4840-a24e-9290494b2312
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0
Steimacher, A.
02a903c5-331d-44e9-a39b-7ae309bfd588
Medina, A.N.
48b023fe-45b3-4260-b712-d285fbfe0f73
Bento, A.C.
047cff12-23a2-46d2-b2a9-7d5f9a1a2d14
Rohling, J.H.
2dee7f29-08df-4965-a02b-2f133a6808ae
Baesso, M.L.
7ae321a0-7cba-4fc4-982d-409b5f6660a9
Reynoso, V.C.S.
81a3d3c5-36be-450a-9483-5886e3e5b98d
Lima, S.M.
812be72f-4727-4840-a24e-9290494b2312
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Hewak, D.W.
87c80070-c101-4f7a-914f-4cc3131e3db0

Steimacher, A., Medina, A.N., Bento, A.C., Rohling, J.H., Baesso, M.L., Reynoso, V.C.S., Lima, S.M., Petrovich, M.N. and Hewak, D.W. (2004) The temperature coefficient of the optical path length as a function of the temperature indifferent optical glasses. Journal of Non-Crystalline Solids, 348, 240-244. (doi:10.1016/j.jnoncrysol.2004.08.176).

Record type: Article

Abstract

An interferometric technique was used to determine the temperature coefficient of the optical path length (dS/dT) as a function of the temperature in several optical glasses. The temperature range was between 25 °C and 180 °C. The studied samples included undoped and doped oxide glasses, such as low silica calcium aluminosilicate, phosphates, borates and also chalcogenides. The oxide glasses had dS/dT between 10 × 10-6 /K and 20 × 10-6 /K, while for the chalcogenides, these were around 70 × 10-6 /K. The results showed that dS/dT’s increased with the temperature in all samples. For samples doped with Nd the dS/dT values were found to be independent of concentration. On the other hand, for the phosphate glass doped with Cr, dS/dT increased about 5% when compared with the Nd doped one. In conclusion, the used interferometric method, which is a considerably simpler and a lower cost technique, and is a useful tool to measure dS/dT in semi-transparent glasses as a function of the composition and temperature.

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Published date: November 2004

Identifiers

Local EPrints ID: 15022
URI: https://eprints.soton.ac.uk/id/eprint/15022
ISSN: 0022-3093
PURE UUID: 7ede7c70-816c-4b93-94a2-e26c2e5a5b82
ORCID for M.N. Petrovich: ORCID iD orcid.org/0000-0002-3905-5901
ORCID for D.W. Hewak: ORCID iD orcid.org/0000-0002-2093-5773

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Date deposited: 11 May 2005
Last modified: 10 Dec 2019 01:56

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