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Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/338637
Description: Time-gated luminescence microscopy using long-lifetime molecular probes can effectively eliminate autofluorescence to enable high contrast imaging. Here we investigate a new strategy of time-gated ima ... More
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Date: 2013
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/288149
Description: By controlling the size of Yb,Er, doped upconversion nanoparticles, we obtain varying emission lifetimes and emission ratios of green and red light, which we explain by modelling of excited state deca ... More
Reviewed: Reviewed
Date: 2013
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/279217
Description: Upconversion nanocrystals convert infrared radiation to visible luminescence, and are promising for applications in biodetection, bioimaging, solar cells and three-dimensional display technologies. Al ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/272324
Description: Despite recent achievements to reduce surface quenching in NaYF₄:Yb,Er nanocrystals, a complete understanding of how the nanocrystal size affects the brightness of upconversion luminescence is still i ... More
Reviewed: Reviewed
Date: 2011
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/169449
Description: Upconversion decay rates in colloidal NaYF4:Yb, Er nanocrystals for biolabelling depend on nanoparticle size. Lifetime dependence on various quenching mechanisims is explained using rate equations to ... More
Reviewed: Reviewed
Date: 2007
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/23713
Description: Ultrafast laser direct write micro-fabrication has emerged as a significant enabling technology creating new opportunities in microphotonics. The talk will present recent results of the performance of ... More
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Date: 2006
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/16849
Description: We review femtosecond laser-direct write inscription of guided wave structures in bulk glass and discuss our recent demonstrations of a range of 2- and 3-D photonic devices using this technique.
Date: 2005
Subject Keyword: 020500 Optical Physics
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/18602
Description: We report 95% conversion from the optimized Q-switched fundamental output to green output in the self-frequency doubling material Yb:YAB. Maximum average green powers of 2.27 W were obtained at 520-52 ... More
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Reviewed: Reviewed
Date: 2005
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/119029
Description: 1 page(s)
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Date: 2005
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/30062
Description: Ytterbium-doped self-frequency-doubling lasers offer high efficiency, tunable, visible and near-infrared, cw and pulsed operation from compact devices. We review the performance of ytterbium-doped ytt ... More
Reviewed: Reviewed
Date: 2004
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/16800
Description: The erbium and ytterbium ion concentrations in the host yttrium calcium oxaborate have been optimized for diode pumped continuous-wave (CW) laser operation using spectroscopic measurements, modeling o ... More
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Date: 2003
Language: eng
Resource Type: conference paper abstract
Identifier: http://hdl.handle.net/1959.14/120385
Description: We have previously reported the first demonstration of laser operation in Er,Yb:YCOB with studies of the Er→Yb energy transfer process to identify the optimum dopant concentrations. In this paper we w ... More
Date: 2003
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/123891
Description: All-solid-state laser devices operating in the 1.5 - 1.6 μm wavelength range have many practical applications. The most notable of these is their use in optical telecommunications, but the current res ... More
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Date: 2003
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/119620
Description: The polycrystalline material preparation and single crystal growth of Er: Yb: YCa4O(BO3)3(Er: Yb: YCOB) were studied, and the Er: Yb: YCOB single crystals with high optical quality were grown by CZ me ... More
Reviewed: Reviewed
Date: 2003
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/28550
Description: We report widely tunable infrared and self-frequency-doubled operation in ytterbium-doped yttrium aluminum borate (Yb:YAB). In the infrared, tuning has been obtained between 1016 and 1090 nm and also ... More
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