Significant blue-shift in photoluminescence excitation spectra of Nd3+:LaF3 potential laser medium at low-temperature期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Significant blue-shift in photoluminescence excitation spectra of Nd3+:LaF3 potential laser medium at low-temperature

Affiliation:	1. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565-0871, Japan;2. Centre for Theoretical Chemistry and Physics, Institute of Natural and Mathematical Sciences, Massey University, Albany, Auckland 0632, New Zealand;3. Institute for Academic Initiatives, Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan;4. Institute of Physics, Viet Nam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Viet Nam;5. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan;6. New Industry Creation Hatchery Center, Tohoku University, 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan;1. Department of Physics, Hitit University, 19040 Çorum, Turkey;2. Department of Electrical and Electronics Engineering, Atilim University, 06836 Ankara, Turkey;3. Department of Physics, Middle East Technical University, 06800 Ankara, Turkey;4. Virtual International Scientific Research Centre, Baku State University, 1148 Baku, Azerbaijan;1. Dept. de Física de Materiales, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Laser Processing Group, Instituto de Óptica, CSIC, 28006 Madrid, Spain;3. Física i Cristalografia de Materials i Nanomaterials (FiCMA-FiCNA), Universitat Rovira i Virgili, Tarragona, Spain;1. University of Silesia, Institute of Chemistry, Szkolna 9, 40-007 Katowice, Poland;2. Bialystok University of Technology, Faculty of Electrical Engineering, Wiejska 45D, 15-351 Bialystok, Poland;1. Department of Energy Systems Research, Ajou University, Suwon 443-749, Republic of Korea;2. Department of Physics, Ajou University, Suwon 443-749, Republic of Korea;1. School of Information Science and Engineering and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Jinan 250100, China;2. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, China;3. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China

Abstract:	Temperature-dependent optical properties of bulk Nd³⁺:LaF₃ crystals are reported. A blue-shift in the photoluminescence excitation (PLE) spectrum is observed at 30 K. The 173.2-nm emission peak wavelength at 300 K shifted to 172.8 nm at 30 K, consistent with the 6-nm blue-shift in transmission edge and 2437-cm⁻¹ increase in the lowest energy level of the 4f²5d configuration. Thermal broadening of the 5d–4f emission bands with increasing temperature is also observed as the dip at around 178.5 nm present at 30 K disappears at 300 K. A smaller spectral overlap between the PLE and emission spectra is observed as temperature is decreased. Our results suggest that absorption cross-section at the peak fluorescence wavelength is expected to decrease at 30 K.

Keywords:	Fluoride crystal Vacuum ultraviolet Temperature dependent Laser material
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