Photonic integration in k-space: Enhancing the performance of photonic crystal dye lasers

Abstract

We demonstrate how two optical functionalities can be implemented in a single photonic crystal structure by carefully engineering dispersion in several different bands at several different wavelengths. We use the concept for optically pumped dye doped hybrid polymer band edge lasers and show how a rectangular photonic crystal lattice imprinted into the surface can provide both feedback for in-plane band edge lasing and couple pump light into the device plane, thus increasing the emitted intensity and lowering the lasing threshold by more than an order of magnitude.

Distributed feedback lasers based on perylenediimide dyes for label-free refractive index sensing

“…An interesting approach in this context is the use of a resonant optical pumping scheme for the DFB, consisting in coupling the excitation light into a distinct resonant mode of the laser cavity through illumination at a specific incident angle. This approximation has demonstrated success in reducing the laser pump threshold, and consequently also in increasing the operational lifetime, in two-and one-dimensional DFB sensors [36,37]. Another reported strategy to increase the DFB sensor sensitivity consists in depositing high refractive index layers on top of the active film [19,21,26].…”

Influence of index contrast in two dimensional photonic crystal lasers

“…In CNP the subwavelength features are physically deformed, while the larger structures are defined by UV exposure through the hybrid mask/mold. 15 CNP gives a potential for high throughput and low cost fabrication. We focus on PhCs with rectangular lattices and a quarter-wave phase shift line defect cavity located in the middle of the crystal, see Fig.…”

Temperature effect on the lasing from a dye-doped two-dimensional hexagonal photonic crystal made of holographic polymer-dispersed liquid crystals

“…Additionally, although allowed in theory, these completing lasing peaks are preferred to appear under a higher pumping energy, due to the spatial hole burning effect. 16 From Figs. 2͑a͒-2͑c͒, we can find that when the temperature is increased, the intensity of lasing peaks is decreased and the wavelength of lasing peaks is red-shifted.…”