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Your search keyword '"Copner, N. J."' showing total 18 results
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18 results on '"Copner, N. J."'

15. Mode hop free tunable blue laser

Author

Li, Kang, Wang, Hongying, Huang, Jungang, Chaney, Ray, and Copner, N. J.

Abstract

A mode hop free tunable blue laser at 465 nm based on an external cavity system is investigated. The single longitudinal mode second-harmonic generation (SHG) blue laser was generated using quasi-phase matching (QPM) based MgO: PPLN pumped by infrared diode laser at 930 nm with one lasing longitudinal mode. The wide turning rang in excess of 100 GHz is achieved by using combination the etalon, silica glass plate and narrow band filter into the external cavity, which only allow one longitudinal mode running and operating wavelength tuning. 30 mw blue light was obtained at wavelength of 465 nm with beam quality better then M2=1.3.

Published
2012
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17. 465?nm laser sources by intracavity frequency doubling using a 49-edge-emitters laser bar

Author

Li, K., Wang, H., Copner, N. J., Gawith, C. B. E., Knight, I. G., Pfeiffer, H.-U., Musk, B., and Moss, G.

Abstract

A compact blue laser was generated by intracavity frequency doubling based on quasi-phase-matched second-harmonic generation (SHG) in a MgO-doped periodically poled lithium niobate bulk crystal. A 49 single-transverse-mode edge-emitters laser bar with antireflective coating was used as a pump source. An optical output power of 1.2?W SHG of blue lights at 465?nm is generated at 45?A injection current, equivalent to an overall wall-plug efficiency of 1.33%.

Published
2011

18. All optical nanostructed sensor based on metal-dielectric-metal plasmonic waveguide

Author

Gong, Yongkang, Copner, N. J., Davies, Antony, Li, Kang, Huang, Jungang, Gong, Yongkang, Copner, N. J., Davies, Antony, Li, Kang, and Huang, Jungang

Abstract

Based on a two-dimensional plasmonic metal-dielectric-metal waveguide with a thin metallic layer and dual nanocavites inserted in the core, a novel nanostructured absorber is presented. A transfer matrix model for the proposed structure is established, and the optical spectra are investigated. Design results show that a narrow reflection spectrum occurs at position of the near-unity absorption, and is significantly influenced by the environment. It is able to generate a sensitivity as high as 1000 nm/RIU, which be used as an excellent sensing platform for chemical and biochemically relevant molecules.

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