Threshold reduction induced by silica nanoparticledispersed active layer in diode-pumped microcavity dye laser

Abstract

Abstract:We report a vertical microcavity dye laser consisting of a polymeric active random layer doped with silica nanoparticles whose diameters are approximately 100 nm. Pumped by an InGaN-based blue-violet laser diode with pulse duration of 3 ns, single mode laser oscillation was obtained at a wavelength of 530 nm. The threshold pump power decreased from 70 mW/pulse to 49 mW/pulse by adding nanoparticles to the active layer. We found an optimum particle density of 2×10 13 cm −3 by measuring threshold pump power to change depending on the particle density in the activity layer.

Micro‐LED pumped polymer laser: A discussion of future pump sources for organic lasers

“…either a laser diode (LD) or a light‐emitting diode (LED). Owing to the recent advances in GaN based material growth and processing, driven by the prospect of solid state lighting and high density data storage, GaN LDs (400–450 nm) were proven to be suitable pump sources for OSLs by various groups . A relatively unexplored area is the use of GaN LEDs as pump sources.…”

Diode-pumped all-fiber-optic liquid dye laser

“…A LD pumping source has advantage in regard to the price, the size and the energy consumption compared to the frequency-doubled ones used in previous works [3][4][5][6][7][8][9]. We also have demonstrated a LD pumping through an optical fiber transversely in regard to the optical axis of the resonator, which is an alternative to the direct LD pumping demonstrated in previous works [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Thus we can take the advantages of the basic structure used, as we have demonstrated in [24], and with the help of fiber micro-optics could create a miniature fully integrated all-fiber-optic dye laser.…”

“…Dye lasers that are excited by LDs and that operate in the visible wavelength range have been demonstrated over the years. To provide feedback in these lasers, distributed Bragg reflectors [10][11][12][13][14][15][16][17][18], distributed feedback reflectors [19,20], dichroic mirrors and two-dimensional photonic crystal resonators [21][22][23] are used for example. Even the operation of the pumping LD using rechargeable nickel metal hydride batteries has been demonstrated [21].…”

“…The active medium in diode pumped dye lasers generally is excited directly by focusing the radiation from the LD [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The use of optical fibers in the pumping system would allow the creation of a compact all-fiber-optic dye laser source.…”

Tunable polymer dye laser pumped by two 513 nm diodes

“…Until recently, high-power semiconductor lasers have been developed only for the infrared region, whereas diodes in the visible range have not provided the required power density of radiation. For this reason, repeated attempts to apply laser diodes to the pumping of dye lasers led to lasing of very low efficiency, at a fraction of 1%, and with too narrow a wavelength tuning range [1][2][3][4][5]. In recent years, due to the creation of GaN-based high-power blue and green semiconductor lasers, there has been considerable success in the pumping of dye lasers by such laser diodes.…”