Caltech Nanofabrication Group

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Asymmetric light propagationBy manipulating materials at dimensions smaller than the wavelength of light, we reveal the truly amazing interaction between photons and matter when optical fields are confined to their ultimate limits.  The drive to shrink optical components has led to complete benchtop networks becoming incorporated on a single chip, communication systems with lower power and faster speeds, integrated spectroscopy and sensing platforms and fundamental scientific testbeds.  Having developed the first vertical cavity laser, the first photonic crystal laser, the first demonstration of strong coupling in the solid state as well electro-optic modulators with record low drive voltages and all-optical modulators operating at THz speeds, we continue to pioneer the next generation of nanophotonic devices.  Our current research aims to shrink laser dimensions and lower threshold powers even further, exploit nanoscale dimensions to enable light emission from silicon, produce optical sensors with enhanced sensitivity, and further explore cavity QED in the solid state.







  • Fegadolli, W., Feng, L., Mujeeb-U-Rahman, M., Oliveira, J. E., de Almeida, V. R. & Scherer, A. (2014). Experimental demonstration of a reconfigurable silicon thermo-optical device based on spectral tuning of ring resonators for optical signal processing. Optics Express, 22(03), 3425-3431. [More] 
  • Chen, Y., Fegadolli, W., Jones, W. M., Scherer, A. & Li, M. (2014). Ultrasensitive Gas-Phase Chemical Sensing Based on Functionalized Photonic Crystal Nanobeam Cavities. ACS Nano, Advanced Online. [More] 
  • Lu, T.-J., Kim, S.-H., Postigo, P. A., Regreny, P., Seassal, C. & Scherer, A. (2013). Uniquely and Arbitrarily Shaped Laser Resonators Using 2D InAsP/InP Photonic Crystals. Electronics Letters, 49(25), 1633-1635. [More] 
  • Fegadolli, W., Kim, S.-H., Postigo, P. A. & Scherer, A. (2013). Hybrid Single Quantum Well InP/Si Nanobeam Lasers for Silicon Photonics. Optics Letters, 38(22), 4656-4658. [More] 
  • Lai, W.-T., Liao, P., Homyk, A., Scherer, A. & Li, P. -. (2013). SiGe Quantum Dots over Si Pillars for Visible to Near-infrared Broadband Photodetection. IEEE Photonics Technology Letters, 25(15), 1520-1523. [More] 


Administrative and Financial Contact

Kate Finigan
MC 200-79, Caltech
1200 E California Blvd
Pasadena, CA 91125

Office:  215 Powell-Booth
Phone:  626.395.4585
Fax: 626.577.8442