Raviv Perahia

**Research Synopsis :**

**Fig 1:** Fabricated photonic semiconductor devices: (a) Photonic Crystal mid-IR resonant Dot-in-Well detector. (b) Quantum Cascade Photonic Crystal Laser. (c) Silicon nitride microdisk resonator with fiber placement forks. (d) Quantum well near-IR hybrid mode surface-plasmon dielectric laser.

I am a Postdoctoral fellow working with Prof. Oskar Painter in the Applied Physics Department at the California Institute of Technology. My current research interests lie in the integration of wavelength scale semiconductors lasers, intimate metal contacts, and optomechanics.

My graduate work consisted of several projects under the umbrella of microscale semiconductor lasers and cavities. Each project involved design and simulation, fabrication, testing, and instrumentation.

I began my graduate work by developing mid infrared photonic crystal resonant detectors (Dot-in-Well) and lasers (Quantum Cascade). Surface sensitive Quantum Cascade lasers were developed into sensors of analytes in the liquid phase. Work was carried out towards device integration with polymer microfluidic chips. My focus then shifted to studying surface-plasmon dielectric mode hybridization and lasing in sub-wavelength partially silver coated microdisk cavities. In parallel, light-matter interaction in the strong-coupling regime was investigated in semiconductor microdisk structures where one quantum dot exciton interacts with one optical mode.

**Fig 2**: Finite Element Method simulations of ridge waveguide laser cavities and whispering gallery laser cavities.

**Publications:**

**R. Perahia**, T. P. Mayer Alegre, A. Safavi-Naeini, and O. Painter, “Surface Plasmon Mode Hybridization in Sub-Wavelength Microdisk Lasers” (Accepted, APL, Nov. 2009) arXiv
**R. Perahia**, V. Moreau, R. Colombelli, O. Painter, "Design of quantum cascade lasers for intra-cavity sensing in the mid infrared" (in preparation, OE)
K. Srinivasan, C. P. Michael, **R. Perahia**, and O. Painter, ”Investigations of a coherently driven semiconductor optical cavity QED system,” Physical Review A (Atomic, Molecular, and Optical Physics) 78, 033839 (2008). pdf
V. Moreau, R. Colombelli, **R. Perahia** , O. Painter, L. R.Wilson, and A. B. Krysa, “Proof-of-principle of surface detection with air-guided quantum cascade lasers,” Optics Express 16, 6387 (2008). pdf
Q. Lin, T. J. Johnson, **R. Perahia**, C. P. Michael, and O. J. Painter, “A proposal for highly tunable optical parametric oscillation in silicon micro-resonators,” Optics Express 16, 10596 (2008). pdf
V. Moreau, M. Bahriz, R. Colombelli, **R. Perahia**, O. Painter, L. R. Wilson, and A. B. Krysa, “Demonstration of air-guided quantum cascade lasers without top claddings,” Optics Express 15,14861 (2007). pdf
M. Eichenfield, C. P. Michael, **R. Perahia**, and O. Painter, “Actuation of micro-optomechanical systems via cavity-enhanced optical dipole forces,” Nature Photonics 1, 416 (2007). pdf
K. T. Posani, V. Tripathi, S. Annamalai, N. R. Weisse-Bernstein, S. Krishna, **R. Perahia**, O. Crisafulli, and O. J. Painter, “Nanoscale quantum dot infrared sensors with photonic crystal cavity,” Applied Physics Letters 88 (2006). pdf
Research Group	Applied Physics	Personal Webpage

Fig 1: Fabricated photonic semiconductor devices: (a) Photonic Crystal mid-IR resonant Dot-in-Well detector. (b) Quantum Cascade Photonic Crystal Laser. (c) Silicon nitride microdisk resonator with fiber placement forks. (d) Quantum well near-IR hybrid mode surface-plasmon dielectric laser.

I am a Postdoctoral fellow working with Prof. Oskar Painter in the Applied Physics Department at the California Institute of Technology. My current research interests lie in the integration of wavelength scale semiconductors lasers, intimate metal contacts, and optomechanics.

My graduate work consisted of several projects under the umbrella of microscale semiconductor lasers and cavities. Each project involved design and simulation, fabrication, testing, and instrumentation.

I began my graduate work by developing mid infrared photonic crystal resonant detectors (Dot-in-Well) and lasers (Quantum Cascade). Surface sensitive Quantum Cascade lasers were developed into sensors of analytes in the liquid phase. Work was carried out towards device integration with polymer microfluidic chips. My focus then shifted to studying surface-plasmon dielectric mode hybridization and lasing in sub-wavelength partially silver coated microdisk cavities. In parallel, light-matter interaction in the strong-coupling regime was investigated in semiconductor microdisk structures where one quantum dot exciton interacts with one optical mode.

Fig 2: Finite Element Method simulations of ridge waveguide laser cavities and whispering gallery laser cavities.

R. Perahia, T. P. Mayer Alegre, A. Safavi-Naeini, and O. Painter, “Surface Plasmon Mode Hybridization in Sub-Wavelength Microdisk Lasers” (Accepted, APL, Nov. 2009) arXiv

R. Perahia, V. Moreau, R. Colombelli, O. Painter, "Design of quantum cascade lasers for intra-cavity sensing in the mid infrared" (in preparation, OE)

K. Srinivasan, C. P. Michael, R. Perahia, and O. Painter, ”Investigations of a coherently driven semiconductor optical cavity QED system,” Physical Review A (Atomic, Molecular, and Optical Physics) 78, 033839 (2008). pdf

V. Moreau, R. Colombelli, R. Perahia , O. Painter, L. R.Wilson, and A. B. Krysa, “Proof-of-principle of surface detection with air-guided quantum cascade lasers,” Optics Express 16, 6387 (2008). pdf

Q. Lin, T. J. Johnson, R. Perahia, C. P. Michael, and O. J. Painter, “A proposal for highly tunable optical parametric oscillation in silicon micro-resonators,” Optics Express 16, 10596 (2008). pdf

V. Moreau, M. Bahriz, R. Colombelli, R. Perahia, O. Painter, L. R. Wilson, and A. B. Krysa, “Demonstration of air-guided quantum cascade lasers without top claddings,” Optics Express 15,14861 (2007). pdf

M. Eichenfield, C. P. Michael, R. Perahia, and O. Painter, “Actuation of micro-optomechanical systems via cavity-enhanced optical dipole forces,” Nature Photonics 1, 416 (2007). pdf

K. T. Posani, V. Tripathi, S. Annamalai, N. R. Weisse-Bernstein, S. Krishna, R. Perahia, O. Crisafulli, and O. J. Painter, “Nanoscale quantum dot infrared sensors with photonic crystal cavity,” Applied Physics Letters 88 (2006). pdf