Work

Augmented spectrum bandwidth of Nd-doped garnet and bixbyite by spectrum tailoring

Year: 2025

Type: article

Abstract: Although Nd-doped garnet and bixbyite are well-known solid-state laser gain media due to their promising characteristics, they have a clear shortcoming of narrow emission bandwidth from the viewpoint of ultrafast pulse generation. In this work, we estimated the possible designable bandwidth by the spectral tailoring of Nd-doped garnet and bixbyite. Based on the evaluation of fluorescent spectra from Nd 3+ in the various kinds of ordered and disordered host ceramics with the composition of Y x Lu 2-x O 3 , Y x Gd 2-x O 3 , Lu x Gd 2-x O 3 , Y 3 Al x Sc 5-x O 12 , Y 3 Al x Ga 5-x O 12 , Y x Lu 3-x Al 5 O 12 , Y x Gd 3-x Al 5 O 12 , and Lu x Gd 3-x Al 5 O 12 , we concluded 6-nm spectral bandwidth was possible by use of the stacked composite of at least four kinds of Nd-doped garnet crystals. In addition, we discovered the improvement of the designability and the augmentation of the bandwidth by the temperature tuning of the stacked composite. Consequently, a 6-nm emission bandwidth was demonstrated using the stacked composite of Nd:Gd 3 Ga 5 O 12 , Nd:Y 3 ScAl 4 O 12 , Nd:Y 3 Sc 2 Al 3 O 12 , and Nd:Y 3 Al 5 O 12 .

Source: Optics Express

DOI: 10.1364/oe.554538

Authors: Yoichi Sato, Takunori Taira

Institution: Institute for Molecular Science

Language: English

Topic: Solid State Laser Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: JST-Mirai Program