Effect of temperature on factors relevant to cryogenic laser operation in CaF2:Pr crystals

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-01-06 DOI:10.1016/j.jlumin.2025.121068

R. Lisiecki , B. Macalik , P. Solarz , R. Kowalski , J. Komar , A. Strzęp , Chonglei Xu , Fengkai Ma , Liangbi Su , W. Ryba-Romanowski

引用次数: 0

Abstract

Visible emission spectra of CaF₂:0.35%Pr³⁺ crystals were recorded as a function of temperature from 5 K to 300 K with steps of 30 K. For each temperature point the linewidths ΔE and peak emission cross section σ_emax were evaluated for selected preponderant emission lines. For each emission lines the increase of temperature brings about the increase of emission linewidths and decrease of peak emission cross sections. As a consequence of thermal line narrowing the population densities needed to achieve generation threshold at 5 K are two times smaller roughly with respect to those at 300 K. Also, the peak stimulated emission cross sections at 10 K are greater than those at 300 K by factors of 2.78 and 2.57 for wavelengths 642 and 734 nm, respectively.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.