A high-resolution spectrometer based on a compact planar two dimensional photonic crystal cavity array
Abstract
We demonstrate a compact spectrometer based on an array of high-quality-factor photonic crystal nanocavities, coupled via a planar two-dimensional waveguide. This architecture enables spectral analysis of incident light with resolution as high as the bandwidth of the cavity mode–0.3 nm at 840 nm for our device. The design is easily extended to the visible and deep-infrared spectral ranges. The two-dimensional cavity array can be mated to commercial two-dimensional optical detector arrays, creating a compact and high-resolution spectrometer suitable for a range of applications including materials and chemical analysis.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 04, 2012
- Source ID
- 10.1063/1.4724177
Entities
People
- Dirk Englund
- Fariba Hatami
- Ioannis Kymissis
- Nadia Pervez
- Xuetao Gan
Organizations
- Air Force Office of Scientific Research
- Columbia University
- Humboldt-Universität zu Berlin