Reflective optical limiter based on resonant transmission
Abstract
Optical limiters transmit low-level radiation while blocking electromagnetic pulses with excessively high energy (energy limiters) or with excessively high peak intensity (power limiters). A typical optical limiter absorbs most of the high-level radiation, which can cause its overheating and destruction. Here we introduce the concept of a reflective energy limiter which blocks electromagnetic pulses with excessively high total energy by reflecting them back to space, rather than absorbing them. The idea is to use a defect layer with temperature-dependent loss tangent embedded in a low-loss photonic structure. The low-energy pulses with central frequency close to that of the localized defect mode will pass through. But if the cumulative energy carried by the pulse exceeds certain level, the entire photonic structure becomes highly reflective (not absorptive) within a broad frequency range. The underlying physical mechanism is based on self-regulated impedance mismatch which increases dramatically with the cumulative energy carried by the pulse.
- Publication:
-
Physical Review A
- Pub Date:
- April 2015
- DOI:
- 10.1103/PhysRevA.91.043838
- arXiv:
- arXiv:1412.6207
- Bibcode:
- 2015PhRvA..91d3838M
- Keywords:
-
- 42.25.Bs;
- 42.65.-k;
- Wave propagation transmission and absorption;
- Nonlinear optics;
- Physics - Optics
- E-Print:
- In this paper we propose the concept of energy limiter as opposed to our previous contribution http://arxiv.org/abs/1309.2595 where we have introduced the concept of power limiter