Search Results - "Beecher, S J"

Characterising energy transfer upconversion in Nd-doped vanadates at elevated temperatures by Cante, S, Beecher, S J, Mackenzie, J I

“…The Energy Transfer Upconversion (ETU) macroparameter is measured for Nd-doped GdVO and YVO samples at temperatures ranging from Room Temperature (RT) to 450K,…”
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Ostium Ratio and Neck Ratio Could Predict the Outcome of Sidewall Intracranial Aneurysms Treated with Flow Diverters by Paliwal, N, Tutino, V M, Shallwani, H, Beecher, J S, Damiano, R J, Shakir, H J, Atwal, G S, Fennell, V S, Natarajan, S K, Levy, E I, Siddiqui, A H, Davies, J M, Meng, H

“…Incompletely occluded flow diverter treated aneurysms remain at risk of rupture and thromboembolic complications. Our aim was to identify the potential for…”
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Amplification of a radially polarised beam in an Yb:YAG thin-slab by Smith, C. R., Beecher, S. J., Mackenzie, J. I., Clarkson, W. A.

“…The use of an Yb:YAG thin-slab architecture for amplification of a radially polarised beam at 1030 nm is investigated and shown to be a promising route for…”
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Evanescent-wave coupled right angled buried waveguide: Applications in carbon nanotube mode-locking by Mary, R., Brown, G., Beecher, S. J., Thomson, R. R., Popa, D., Sun, Z., Torrisi, F., Hasan, T., Milana, S., Bonaccorso, F., Ferrari, A. C., Kar, A. K.

“…We present an evanescent-field device based on a right-angled waveguide. This consists of orthogonal waveguides, with their points of intersection lying along…”
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Concentration dependence of energy transfer upconversion in Nd:YAG by Yoon, S. J., Yan, R. P., Beecher, S. J., Mackenzie, J. I.

“…We present measurements of the concentration dependence of the energy transfer upconversion (ETU) macro-parameter in Nd:YAG obtained via the Z-scan technique…”
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The molecular cloning of the complementary deoxyribonucleic acid for bovine vitamin D-dependent calcium-binding protein: structure of the full-length protein and evidence for homologies with other calcium-binding proteins of the troponin-C superfamily of proteins by Kumar, R, Wieben, E, Beecher, S J

“…We have cloned the cDNA for bovine intestinal vitamin D-dependent calcium-binding protein and, based on the sequence of the DNA, have deduced the structure of…”
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Compact mid-infrared Cr:ZnSe channel waveguide laser by Macdonald, J. R., Beecher, S. J., Berry, P. A., Schepler, K. L., Kar, A. K.

“…We demonstrate a mid-infrared channel waveguide laser in Cr:ZnSe operating at 2573 nm. The compact cavity has a total footprint of less than 3 cm2 and produces…”
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320 fs pulse generation from an ultrafast laser inscribed waveguide laser mode-locked by a nanotube saturable absorber by Beecher, S. J., Thomson, R. R., Psaila, N. D., Sun, Z., Hasan, T., Rozhin, A. G., Ferrari, A. C., Kar, A. K.

“…Ultrafast laser inscription is used to fabricate the gain element for a mode-locked Er-doped bismuthate glass waveguide laser. Mode-locking is initiated and…”
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Temperature-dependent spectroscopy and microchip laser operation of Nd:KGd(WO4)2 by Loiko, P., Yoon, S.J., Serres, J.M., Mateos, X., Beecher, S.J., Birch, R.B., Savitski, V.G., Kemp, A.J., Yumashev, K., Griebner, U., Petrov, V., Aguiló, M., Díaz, F., Mackenzie, J.I.

“…High-resolution absorption and stimulated-emission cross-section spectra are presented for monoclinic Nd:KGd(WO4)2 (Nd:KGW) laser crystals in the temperature…”
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Direct ultrafast laser written C-band waveguide amplifier in Er-doped chalcogenide glass by Sabapathy, Tamilarasan, Ayiriveetil, Arunbabu, Kar, Ajoy K., Asokan, Sundarrajan, Beecher, Stephen J.

“…This paper reports the fabrication and characterization of an ultrafast laser written Er-doped chalcogenide glass buried waveguide amplifier; Er-doped GeGaS…”
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1.5 GHz Pulse Generation From a Monolithic Waveguide Laser With a Graphene-Film Saturable Output Coupler by Mary, R, Beecher, S. J, Brown, G, Torrisi, F, Milana, S, Popa, D, Hasan, T, Sun, Z, Lidorikis, E, Ohara, S, Ferrari, A. C, Kar, A. K

“…Optics Express 21, 7943 (2013) We fabricate a saturable absorber mirror by coating a graphene film on an output coupler mirror. This is then used to obtain…”
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Ultrafast laser inscription of low loss waveguides in polycrystalline ZnSe by Macdonald, J R, Thomson, R R, Psaila, N D, Beecher, S J, Bookey, H T, Kar, A K

“…We describe the fabrication of optical waveguides in polycrystalline ZnSe using ultrafast laser inscription. The optimum waveguide, characterized at 800 nm,…”
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Single Stage Ultrafast Laser Inscription of a Side-Polished Fiber-Like Waveguide Sensor by Beecher, S. J., Thomson, R. R., Pal, B. P., Kar, A. K.

“…Ultrafast laser inscription (ULI) has been used to fabricate an 18 mm long sub-surface optical waveguide in fused silica. The waveguide started and terminated…”
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Strain field manipulation in ultrafast laser inscribed nonlinear BiB3O6 optical waveguides by Beecher, S J, Thomson, R R, Psaila, N D, Reid, D T, Kar, A K, Ebrahim-Zadeh, M

“…Type I phase matching is demonstrated in an ultrafast laser inscribed BiB 3 O 6 optical waveguide. A novel technique was implemented to achieve good spatial…”
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420 fs pulses from an ultrafast laser inscribed waveguide laser utilizing a carbon nanotube saturable absorber by Beecher, S J, Thomson, R R, Psaila, N D, Kar, A K, Sun, Z, Hasan, T, Rozhin, A G, Ferrari, A

“…We report the generation of 420 fs pulses of 1.56 μm light from a mode-locked ultrafast laser inscribed Er-doped waveguide laser. Passive mode-locking was…”
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The evanescent interaction of an ultrafast laser inscribed optical waveguide by Beecher, S. J., Thomson, R. R., Kar, A. K.

“…Ultrafast laser inscription has been used to produce an optical waveguide evanescent field sensor. Fabricated in a single step and exhibiting an insertion loss…”
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Near-IR to Mid-IR multimode waveguides in rare-earth doped YAG by ultrafast laser inscription by Ren, Y. Y., Beecher, S. J., Brown, G., Rodenas, A., Chen, F., Kar, A. K.

“…We report near-infrared to mid-infrared (1.55 to 3.39 μm) multimode waveguiding in deep buried channel waveguides fabricated inside rare-earth ion doped…”
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Surgical and Endovascular Management of Patients With Giant Cerebral Aneurysms by Beecher, J.S, Welch, B.G

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Passive mode-locking of a monolithic waveguide laser with simultaneous Q-switching by Mary, R., Brown, G., Beecher, S. J., Ohara, S., Kar, A. K.

“…A compact waveguide laser in ytterbium doped bismuthate glass is demonstrated. Mode-locked pulses of 1.55 GHz pulse repetition rate are obtained within a…”
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Q-switched mode-locking of a mid-infrared Tm:YAG waveguide laser with graphene film by Ren, Y. Y., Beecher, S. J., Brown, G., Rodenas, A., Lancaster, A., Chen, F., Kar, A. K.

“…Wave-guiding was achieved in Tm 3+ doped YAG cladding waveguide fabricated by ultrafast laser inscription. With a graphene based saturable absorber mirror,…”
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