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Fabrication of submicrometer high refractive index tantalum pentoxide waveguides for optical propulsion of microparticles

Fabrication of submicrometer high refractive index tantalum pentoxide waveguides for optical propulsion of microparticles
Fabrication of submicrometer high refractive index tantalum pentoxide waveguides for optical propulsion of microparticles
Design, fabrication, and optimization of tantalum pentoxide (Ta2O5) waveguides to obtain low-loss guidance at a wavelength of 1070 nm are reported. The high-refractive index contrast (Delta n ~ 0.65, compared to silicon oxide) of Ta2O5 allows strong confinement of light in waveguides of submicrometer thickness (200 nm), with enhanced intensity in the evanescent field. We have employed the strong evanescent field from the waveguide to propel micro-particles with higher velocity than previously reported. An optical propelling velocity of 50 µm/s was obtained for 8 µm polystyrene particles with guided power of only 20 mW.
integrated optics, optical device fabrication, opticalstrip waveguides, optical waveguides
1041-1135
1408-1410
Ahluwalia, Balpreet Singh
f6dfb1bb-760f-4a7e-9050-d66de72348e0
Subramanian, Ananth Z.
634f1b3f-45a7-48d8-817c-be88ff70d235
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53
Perney, Nicolas M.B.
29ba98db-3743-4921-8ede-e167b201ca5f
Sessions, Neil P.
ee737092-56b4-403e-a2f9-764e07e42625
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Ahluwalia, Balpreet Singh
f6dfb1bb-760f-4a7e-9050-d66de72348e0
Subramanian, Ananth Z.
634f1b3f-45a7-48d8-817c-be88ff70d235
Hellesø, Olav Gaute
7c341b6b-c11d-475d-aedd-558f02210e53
Perney, Nicolas M.B.
29ba98db-3743-4921-8ede-e167b201ca5f
Sessions, Neil P.
ee737092-56b4-403e-a2f9-764e07e42625
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca

Ahluwalia, Balpreet Singh, Subramanian, Ananth Z., Hellesø, Olav Gaute, Perney, Nicolas M.B., Sessions, Neil P. and Wilkinson, James S. (2009) Fabrication of submicrometer high refractive index tantalum pentoxide waveguides for optical propulsion of microparticles. IEEE Photonics Technology Letters, 21 (19), 1408-1410. (doi:10.1109/LPT.2009.2027025).

Record type: Article

Abstract

Design, fabrication, and optimization of tantalum pentoxide (Ta2O5) waveguides to obtain low-loss guidance at a wavelength of 1070 nm are reported. The high-refractive index contrast (Delta n ~ 0.65, compared to silicon oxide) of Ta2O5 allows strong confinement of light in waveguides of submicrometer thickness (200 nm), with enhanced intensity in the evanescent field. We have employed the strong evanescent field from the waveguide to propel micro-particles with higher velocity than previously reported. An optical propelling velocity of 50 µm/s was obtained for 8 µm polystyrene particles with guided power of only 20 mW.

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Published date: 2009
Keywords: integrated optics, optical device fabrication, opticalstrip waveguides, optical waveguides
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 270968
URI: https://eprints.soton.ac.uk/id/eprint/270968
ISSN: 1041-1135
PURE UUID: d447c74d-4700-4128-8cae-62b39a11c00b
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

Date deposited: 03 May 2010 10:51
Last modified: 07 Aug 2019 00:55

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