Research Progress of Rare-earth Doped Laser Crystals in Visible Region

Abstract

Visible laser has been widely used in data storage, optical communication, laser display, laser medical treatment, laser printing, and scientific research. With the development of commercial blue light LD, the direct pumping of rare-earth ions doped laser crystals have attracted a lot of interests. Currently, visible ions mainly concentrat on Pr 3+ , Dy 3+ , Tb 3+ , and Sm 3+. Trivalent praseodymium (Pr 3+) is a famous rare-earth ion with extensive laser transitions in visible region such as blue, green, red and orange light. However, there is still a region in yellow emission which is not covered by Pr 3+. Dy 3+ and Tb 3+ have attracted much attention because of their yellow laser transitions. In addition, Sm 3+ and Eu 3+ are also typical visible rare-earth ions. In this paper, we mainly reviewed properties of rare-earth ions doped laser crystals for visible lasers, especially Pr 3+ , Dy 3+ , Tb 3+ and Sm 3+-doped YAlO 3 (YAP), SrAl 12 O 19 (SRA) crystals. A design criterion for Pr 3+ doped oxide materials was summarized. The crystal growth, structure, thermal properties, polarization spectroscopic and laser characteristics were analyzed in detail.

Modeling and numerical simulation of the gain of a 1310nm praseodymium-doped fiber amplifier

“…In recent years, rare earth ions with special spectral properties [9] have had important research and applications in many fields, with the most extensive research on Pr3+ doped crystals.2021, Lin et al [10][11] obtained a laser with a maximum output power of 8.14W at 639nm red using a Pr: YLF crystal with a low doping concentration and blue LD as the pump source. In 2022, Cao Weihang, Li Shue et al [12] pointed out the three laser output types of 𝑃𝑟 solid-state laser in their research results.…”

Structure and spectral properties of Dy3+ doped CaYAlO4 single crystal

“…It can be concluded that this Dy 3+ : CaYAlO 4 crystal could simultaneously act as a promising medium for both solid-state yellow and mid-infrared laser outputs. 570-590 nm visible lasers and 3-5 µm mid-infrared (MIR) lasers have attracted much attention due to their important applications in various fields, especially in the medical field, such as the treatment of skin and eye diseases [1][2][3][4][5] . Therefore, the development of spectral 570-590 nm yellow lasers and 3-5 µm MIR lasers is of great significance.…”