title: Enhancement of pump efficiency of a visible wavelength organic distributed feedback laser by resonant optical pumping.
abstract: A 22× reduction in laser pump threshold and a 23× enhancement in energy conversion have been demonstrated on a second order distributed feedback (DFB) laser using a resonant optical pumping (ROP) technique. The ROP scheme couples the excitation light into a distinct resonant mode of the laser cavity through the illuminating at a specific resonant incident angle. Coupling excitation light into the resonant mode results in an enhanced near-field, which significantly increases pump absorption by the active medium. Consequently, high power conversion efficiency between pumping light and lasing emission is achieved and laser pump threshold power is reduced.
authors: Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.
authors: Chun
authors: C
authors: Ge
authors: Meng
authors: M
authors: Lu
authors: Yafang
authors: Y
authors: Tan
authors: Brian T
authors: BT
authors: Cunningham