research
general interests
Curriculum Vitae: here
My reserach interests are in the practical and applied aspects of nanophotonics, particularly in optical interconnects and biomedical sensing. Projects I have worked on include: creating and using fiber tapers for coupling to microresonators, germanium on silicon as a CMOS compatible light emitter, a fiber taper/photonic crystal electro-optic modulator, world record low power photonic crystal quantum dot laser, a world record low power and fast 10 GHz single-mode photonic crystal LED, and a novel biomedical fiber sensor consisting of a photonic crystal cavity affixed to the tip of an optical fiber. Most recently, we have used this sensor to probe individual biological cells. See publications for details and check out the pretty pictures below.
First demonstration of a nano cavity inside a biological cell. Shown here are two false-colored SEMs of a nanobeam probing a prostate cancer cell. The cells can live and divide with the beam as seen in the bottom right image.
World record fast (10 GHz) and low power (0.25 fJ/bit) photonic crystal nano-LED.
A photonic crystal slab affixed to the tip of an optical fiber for use in remote biological sensing
A light-emitting germanium microdisk resonator and finite-difference time domain simulations of a whispering gallery mode
Publications
- Gary Shambat, Sri Rajasekhar Kothapalli, J Provine, Tomas Sarmiento, James Harris, Sanjiv Sam Gambhir, and Jelena Vuckovic, Single-cell photonic nanocavity probes, Nano Letters (advanced publication) 2013.
- Gary Shambat, Bryan Ellis, Jan Petykiewicz, Arka Majumdar, Marie Mayer, Tomas Sarmiento, James Harris, Eugene Haller, and Jelena Vuckovic, Electrically driven photonic crystal nanocavity devices, IEEE Journal of Selected topics in Quantum Electronics 16, 1700 (2012).
- Jan Petykiewicz, Gary Shambat, Bryan Ellis, and Jelena Vuckovic, Electrical properties of GaAs photonic crystal cavity lateral p-i-n diodes , Applied Physics Letters 101, 011104 (2012).
- Gary Shambat, Sri Rajasekhar Kothapalli, Aman Khurana, J Provine, Tomas Sarmiento, Kai Cheng, Zhen Cheng, James Harris, Heike Daldrup-Link, Sanjiv Sam Gambhir, and Jelena Vuckovic, A photonic crystal cavity-optical fiber tip nanoparticle sensor for biomedical applications, Applied Physics Letters 100, 213702 (2012).
- Gary Shambat, Bryan Ellis, Arka Majumdar, Jan Petykiewicz, Marie Mayer, Tomas Sarmiento, James Harris, Eugene Haller, and Jelena Vuckovic, Ultrafast direct modulation of a single-mode photonic crystal nanocavity light-emitting diode, Nature Communications 2, 539 (2011).
- Gary Shambat, J Provine, Kelley Rivoire, Tomas Sarmiento, James Harris, and Jelena Vuckovic, Optical fiber tips functionalized with semiconductor photonic crystal cavities , Applied Physics Letters 99, 191102 (2011).
- Seongjae Cho, Robert Chen, Sukmo Koo, Gary Shambat, Hai Lin, Namkyoo Park, Jelena Vuckovic, Theodore I. Kamins, Byung-Gook Park, and James Harris, Fabrication and analysis of epitaxially grown Ge{1-x}Sn{x} microdisk resonator with 20-nm free-spectral range, IEEE Photonics Technology Letters 23, 1535 (2011).
- Gary Shambat, Bryan Ellis, Jan Petykiewicz, Marie Mayer, Tomas Sarmiento, James Harris, Eugene Haller, and Jelena Vuckovic, Nanobeam photonic crystal cavity light-emitting diodes, Applied Physics Letters 99, 071105 (2011).
- Szu-Lin Cheng, Gary Shambat, Jesse Lu, Hyon-Yong Yu, Krishna Saraswat, Theodore Kamins, Jelena Vuckovic, and Yoshio Nishi, Cavity-enhanced direct band electroluminescence near 1550 nm from germanium microdisk resonator diode on silicon, Applied Physics Letters 98, 211101 (2011).
- Bryan Ellis, Marie Mayer, Gary Shambat, Tomas Sarmiento, Eugene Haller, James Harris, and Jelena Vuckovic Ultralow-threshold electrically pumped quantum-dot photonic-crystal nanocavity laser, Nature Photonics 5, 297-300 (2011).
- Gary Shambat, Bryan Ellis, Marie Mayer, Arka Majumdar, Eugene Haller, and Jelena Vuckovic, Optics Express,Ultra-low power fiber-coupled gallium arsenide photonic crytsal cavity electro-optic modulator 19, pp. 7530-7536 (2011).
- Gary Shambat, Szu-Lin Cheng, Jesse Lu, Yoshio Nishi, and Jelena Vuckovic, Direct band Ge photoluminescence near 1.6 um coupled to Ge-on-Si microdisk resonators , Applied Physics Letters 97, 241102 (2010).
- Gary Shambat, Kelley Rivoire, Jesse Lu, Fariba Hatami, and Jelena Vuckovic, Tunable-wavelength second harmonic generation from GaP photonic crystal cavities coupled to fiber tapers, Optics Express 18, pp. 12176-12184 (2010).
- Yiyang Gong, Bryan Ellis, Gary Shambat, Tomas Sarmiento, James Harris, and Jelena Vuckovic, Nanobeam photonic crystal cavity quantum dot lasers, Optics Express 18, pp. 8781-8790 (2010).
- Gary Shambat, Yiyang Gong, Jesse Lu, Selcuk Yerci, Rui Li, Luca Dal Negro, and Jelena Vuckovic, Coupled fiber taper extraction of 1.53 um photoluminescence from erbium doped silicon nitride photonic crystal cavities," Optics Express 18, pp. 5964-5973 (2010).
- Szu-Lin Cheng, Jesse Lu, Gary Shambat, Hyun-Yong Yu, Krishna Saraswat, Jelena Vuckovic, and Yoshio Nishi, "Room temperature 1.6um electroluminescence from Ge Light emitting diode on Si substrate," Optics Express, Vol. 17, Issue 12, pp. 10019-10024 (2009).
- Gary Shambat, Albert DeBerardinis, Bo Chen, Petra Reinke, B. Jill Venton, Lin Pu, James Tour, and John Bean, "Addition reaction and characterization of chlorotris(triphenylphosphine)iridium(I) on silicon(111) surfaces," Applied Surface Science, Vol. 255, Issue 20, pp. 8533-8538 (2009).
- Gary Shambat, Mark S. Mirotznik, Gary Euliss, Viktor Smolski, Eric G. Johnson, and Ravindra A. Athale, "Photonic crystal filters for multi-band optical filtering on a monolithic substrate," Journal of Nanophotonics, Vol 3, Issue 1, p. 031506 (2009).