Eur. Phys. J. AP
Volume 10, Number 1, April 2000
|Page(s)||29 - 32|
|Published online||15 April 2000|
Excited state absorption of pump and laser radiations in NYAB non-linear crystal operating at 1.3 µm for visible laser light generation
Departamento de Física de Materiales, Universidad Autonoma de Madrid, Cantoblanco 28049, Madrid,
2 Laboratoire de Physico-Chimie des Matériaux Luminiscents (UMR CNRS 5620), Université Claude Bernard-Lyon, 69629 Villeurbane, France
3 Fujian Institute of Research on The Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
Corresponding author: Jose.Garcia_Sole@uam.es
Revised: 19 January 2000
Accepted: 14 February 2000
Published online: 15 April 2000
Excited state absorption of laser (≅ 1.3 µm, corresponding to the laser channel) and pump (790-860 nm) radiation have been investigated in Nd doped YAl3(BO3)4 non-linear laser crystal. Laser gain slope efficiency measurements as a function of pump wavelength have been used to estimate the excited state absorption of pump radiation. On the other hand, excited state absorption cross-section in the 1300−1400 nm wavelength range has been measured by using two beam spectroscopy. We have obtained that excited state absorption cross-section for pump radiation is negligible whereas around 1.3 µm it is comparable to the stimulated emission cross-section from 4F3/2 state, so that the net gain cross-section becomes negative for certain wavelengths.
PACS: 42.55.Rz – Doped-insulator lasers and other solid state lasers / 42.70.Hj – Laser materials / 78.55.Hx – Other solid inorganic materials
© EDP Sciences, 2000
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.