Single- and multi-beam confinement of electromagnetic waves in a photonic crystal open cavity providing rapid heating and high temperatures

- Wave confinement in photonic crystal open cavity is demonstrated for heat conversion.
- Electromagnetic thermal co-simulation is performed to demonstrate rapid heating.
- Multi-beam confinement in cavity reveals high temperatures at the rate of 560 °C/s.
- Photonic cavity may work with natural weak fields for efficient heating.
- Multilayer cavity can be employed for laser heating and creation of plasmas.