Pulse generation, spectroscopy, and transitions dynamics of Er3+ ions in YAG host

Piotr Konieczny; Jacek Świderski; Andrzej Zając

doi:10.1117/12.784674

28 December 2007 Pulse generation, spectroscopy, and transitions dynamics of Er³⁺ ions in YAG host

Piotr Konieczny, Jacek Świderski, Andrzej Zając

Proceedings Volume 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007; 693717 (2007) https://doi.org/10.1117/12.784674
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007, 2007, Wilga, Poland

Abstract

In Er:YAG, Er:YSGG and Er:YLF lasers the most important are the three lowest energy levels of Er³⁺ ion. Transitions between these levels decide about wavelength of generated laser radiation. In Er:YAG laser these levels are: ⁴I_15/2 (energy: 280 cm^-1), ⁴I_13/2 (6710 cm^-1), ⁴I_11/2 (10330 cm^-1) [1]. Er:YAG has many absorption lines mainly in visual and near infrared wavelength spectrum. This laser may generate optical radiation at two wavelengths: 1,6 μm and 2,94μm. For the first one Er:YAG works as a three level quantum system and the for the second one it works as a four level quantum system. In this case the top laser level is ⁴I_11/2 and the down laser level is ⁴I_13/2. Both the wavelength generated and the work mode may be selected by dopant concentration. In lasers such as Er:YAG an analysis of transitions between levels during optical radiation absorption and generation the Boltzman distribution of energy levels occupation and thermalization effects must be taken into consideration [2]. Authors have developed computer software, which allows analysing transitions dynamics, laser output power/energy and rod's temperature increase (during pulse generation) which depends on: pump properties, initial temperature, and dopant concentration. Analysis may be carried on for monopulse generation as well as for pulse generation. This software allows simplifying Er:YAG laser application designing.

Citation Download Citation

Piotr Konieczny, Jacek Świderski, and Andrzej Zając "Pulse generation, spectroscopy, and transitions dynamics of Er³⁺ ions in YAG host", Proc. SPIE 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007, 693717 (28 December 2007); https://doi.org/10.1117/12.784674

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KEYWORDS

Er:YAG lasers

Mirrors

Erbium

Ions

Pulsed laser operation

Laser applications

Optical simulations

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