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Search Publications by: Kartik Srinivasan (Fed)

Displaying 276 - 287 of 287

Spectroscopy of 1.55 ym PbS Quantum Dots on Si Photonic Crystal Cavities with a Fiber Taper Waveguide

April 23, 2010

Author(s)

Matthew T. Rakher, Ranojoy Bose, Chee Wei Wong, Kartik A. Srinivasan

We use an optical fiber taper waveguide to probe PbS quantum dots (QDs) dried on Si photonic crystal cavities near 1.55 υm. We demonstrate that a low density ({less than or equal to} 100υm -2) of QDs does not significantly degrade cavity quality factors as

An efficient, optical fiber-based waveguide interface to a single quantum dipole

October 12, 2009

Author(s)

Marcelo I. Davanco, Kartik A. Srinivasan

We theoretically investigate a single emitter embedded in a hybrid optical waveguide that proves highly efficient, optical fiber access to the dipole transition. A photoluminescence collection efficiency above 70 \% and an approximately 15 dB transmission

Fiber-coupled semiconductor waveguides as an efficient optical interface to a single quantum dipole

August 15, 2009

Author(s)

Marcelo I. Davanco, Kartik A. Srinivasan

We theoretically investigate the interaction of a single quantum dipole with the modes of a fiber-coupled semiconductor waveguide. Through a combination of tight modal confinement and phase-matched evanescent coupling, we predict that approximately 70 % of

Efficient spectroscopy of single embedded emitters using optical fiber taper waveguides

June 9, 2009

Author(s)

Marcelo I. Davanco, Kartik A. Srinivasan

A technique based on using optical fiber taper waveguides for probing single emitters embedded in thin dielectric membranes is assessed through numerical simulations. For an appropriate membrane geometry, photoluminescence collection e±ciencies in excess

Microphotonics: An out-of-plane experience

January 1, 2009

Author(s)

Kartik A. Srinivasan

Investigations of a coherently driven semiconductor optical cavity QED system

September 30, 2008

Author(s)

Kartik A. Srinivasan, Christopher P. Michael, Raviv Perahia, Oskar Painter

Chip-based cavity QED devices consisting of a self-assembled InAs quantum dot (QD) coupled to a high quality factor GaAs microdisk cavity are coherently probed through the optical channel using a fiber taper waveguide. We highlight one particularly