One-dimensional birefringent photonic crystal laser

Abstract

We studied the polarized laser emission from an anisotropic one-dimensional (1D) birefringent photonic crystal (PC) laser. An active medium layer, which consisted of an epoxy resin doped with fluorescent dye, was sandwiched between two anisotropic 1D PC films. It was shown that efficient laser emissions were generated by optical pumping at relatively low lasing thresholds. The wavelengths of the emitted lasers were 611 and 618 nm, which correspond to the two split eigenmodes at the low-energy band edges that are due to the anisotropy of the PCs. We also demonstrated that the polarization of the lasing emission can be controlled by adjusting the birefringence of the anisotropic PCs.

Melt-processed all-polymer distributed Bragg reflector laser

“…[2] The possibility to fabricate all-polymer lasers through plastic fabrication processes is particularly attractive. [3,4] However, because polymer resonators involve periodic microstuctures, the vast majority of organic lasers reported in the literature require comparably complex fabrication processes, for example embossing, [5] (nano)imprinting, [6] conventional or soft lithography, [7,8] or repetitive spin-coating. [9,10,11] Recently, a distributed Bragg reflector (DBR) laser having commercial multilayer film reflectors was reported.…”

“…[9,10,11] Recently, a distributed Bragg reflector (DBR) laser having commercial multilayer film reflectors was reported. [4] This report describes the fabrication of surface-emitting DBR lasers, which consist of a compressionmolded dye-doped polymer gain medium and photonic crystal (PC) resonators fabricated by multilayer polymer co-extrusion. [12] By careful design and process optimization, outstanding performance has been achieved.…”