Compact dual-band spectral analysis via multiplexed rotated chirped volume Bragg gratings
Abstract
Chirped Bragg volume gratings (CBGs) offer a useful alternative for spectral analysis, but increasing the bandwidth necessitates increasing the device area. In contrast, recently developed rotated CBGs (r-CBGs), in which the Bragg structure is rotated by 45° with respect to the device facets, require increasing only the device length to extend the bandwidth, in addition to the convenience of resolving the spectrum at normal incidence. Here, we multiplex r-CBGs in the same device to enable spectral analysis in two independent spectral windows without increasing the system volume. This new, to the best of our knowledge, device, which we term an X-CBG, allows for compact multi-band spectroscopy in contiguous or separated spectral windows for the visible and near-infrared applications in nonlinear microscopy and material identification and sensing.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 28, 2023
- Source ID
- 10.1364/ol.498216
Entities
People
- Ayman F Abouraddy
- Ivan Divliansky
- Leon Glebov
- Murat Yessenov
- Oussama Mhibik
Organizations
- Office of Naval Research
- University of Central Florida