Infrared-to-visible photon avalanche upconversion dynamics in Ho3+-doped fluorozirconate glasses at room temperature

Up-conversion and photon avalanche in oxy-fluoride nano-structured glasses doped with Ho3+

“…When the excitation power increased, the slope between the emission intensity and the pump power changed from 2.06, 2.41 to 1.67, while the rise time decreased after reaching a maximum value (5.75 ms). These characteristic features of the photon avalanche were consistent with those reported in various Ho 3+ -doped materials [9][10][11][12].…”

“…In addition, photon avalanche up-conversion is one of the most efficient up-conversion processes [8]. Photon avalanche up-conversion in Ho 3+ was also studied in several crystals [9,10] and glasses [11,12] by pumping with 750 nm light source.…”

Пропускание Света Кристаллами С Глубокими Примесями При Участии Двухцентровых Механизмов Нелинейного Фотовозбуждения

“…Большая часть работ по ФЛ (cм., например, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]) относится к проявлениям этих эффектов в системах примесных редкоземельных ионов (РЗИ). Вместе с тем эффекты типа ФЛ могут быть использованы для быстрых оптических переклю-чений твердотельных материалов между состояниями с различными оптическими и электрическими свойствами.…”

Structural and optical properties of yttrium oxide thin films for planar waveguiding applications

“…5 However, this upconversion process can be utilized in the fabrication of simple, compact lasers operating in the visible region. By replacing the erbium ions with other rare earth ions such as Thulium, [18][19][20] Praseodymium, 21,22 or Holmium 20,23 upconversion lasers that emit at a range of visible wavelengths can be developed. 24 For the upconversion process to be efficient the maximum phonon energy of the host material needs to be low to reduce the probability of radiationless phonon transitions.…”