Growth and Characterization of Yb: CALYGLO Crystal for Ultrashort Pulse Laser Applications - Archive ouverte HAL Access content directly
Journal Articles Crystals Year : 2024

Growth and Characterization of Yb: CALYGLO Crystal for Ultrashort Pulse Laser Applications

Abstract

Yb:CALYGLO crystals with a dopant concentration of 5 at.% were successfully grown using the Czochralski method. The crystal samples were extensively studied to analyze their structure, room temperature and low temperature spectra, and laser properties. The highest absorption cross-section at 977 nm was calculated to be 1.83 × 10−20 cm2 for σ polarization and 5.32 × 10−20 cm2 for π polarization. Similarly, the emission cross-section was determined to be 1.38 × 10−20 cm2 at 980 nm for σ polarization and 2.28 × 10−20 cm2 at 981 nm for π polarization, with a full width at half maximum (FWHM) of 50.3 nm and 89.5 nm, respectively. The fluorescence lifetime of the 5 at.% Yb:CALYGLO crystal at 2F5/2 was measured to be 1.10 ms. Additionally, gain cross-sections were calculated for different β values. In the continuous laser experiment, the crystal demonstrated a laser output of 20.15 W at 1057 nm, with a slope efficiency of 53.3%. These experimental findings indicate that the lattice of Y3+ in the crystal is partially replaced by Lu3+ and Gd3+, resulting in a broader spectrum. Consequently, this crystal shows promising potential as a gain medium for ultrashort pulse laser crystals.
Fichier principal
Vignette du fichier
crystals-14-00120-v2.pdf (3.48 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive
Licence

Dates and versions

hal-04499932 , version 1 (11-03-2024)

Licence

Identifiers

Cite

Zebin Wang, Jian Liu, Peng Chen, Peng Liu, Jie Ma, et al.. Growth and Characterization of Yb: CALYGLO Crystal for Ultrashort Pulse Laser Applications. Crystals, 2024, 14 (2), pp.120. ⟨10.3390/cryst14020120⟩. ⟨hal-04499932⟩
11 View
7 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More