Thermalization of one-dimensional photon gas and thermal lasers in erbium-doped fibers
arXiv:1607.01681 · doi:10.1364/OE.25.018963
Abstract
We demonstrate thermalization and Bose-Einstein (BE) distribution of photons in standard erbium-doped fibers (edf) in a broad spectral range up to ~200nm at the 1550nm wavelength regime. Our measurements were done at a room temperature ~300K and 77K. It is a special demonstration of thermalization of photons in fiber cavities and even in open fibers. They are one-dimensional (1D), meters-long, with low finesse, high loss and small capture fraction of the spontaneous emission. Moreover, we find in the edf cavities coexistence of thermal equilibrium (TE) and lasing without an overall inversion. The experimental results are supported by a theoretical analysis based on the rate equations.
16 pages, 7 figures
References in corpus (6)
- Bose-Einstein condensation of photons in an optical microcavity
- Thermalisation of a two-dimensional photonic gas in a 'white-wall' photon box
- Thermalization and breakdown of thermalization in photon condensates
- Condensation in disordered lasers: theory, 3D+1 simulations and experiments
- Thermalization kinetics of light: From laser dynamics to equilibrium condensation of photons
- A quantum Langevin model for non-equilibrium condensation