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Nd³⁺-activated CaF₂ ceramic lasers.

H Chen, A Ikesue, H Noto

|July 2, 2019

Summary

This summary is machine-generated.

Researchers fabricated neodymium-doped calcium fluoride (Nd:CaF2) ceramics, achieving laser action for the first time. These Nd3+-activated CaF2 ceramic lasers demonstrate potential for new optical applications.

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Area of Science:

Materials Science
Laser Physics
Solid-State Photonics

Background:

Calcium fluoride (CaF2) is a promising host material for solid-state lasers due to its excellent optical properties.
Neodymium (Nd3+) doping is widely used to achieve laser emission in various host materials.
Fabrication of high-quality fluoride ceramics is crucial for developing advanced laser devices.

Purpose of the Study:

To fabricate Nd,Y:CaF2 and Nd,La:CaF2 ceramics with good optical quality.
To investigate the optical and lasing properties of these novel ceramic materials.
To demonstrate the first Nd3+-activated CaF2 ceramic laser.

Main Methods:

Ceramic fabrication using reactive sintering and hot isostatic pressing.
Optical characterization including transmission spectra, emission spectra, and fluorescence decay measurements.
Quasi-continuous-wave laser diode pumping at 791 nm to achieve lasing.

Main Results:

Successfully fabricated Nd,Y:CaF2 and Nd,La:CaF2 ceramics with good optical quality.
Observed laser emission at 1064 nm for Nd,Y:CaF2 and 1065 nm for Nd,La:CaF2.
Confirmed the feasibility of Nd3+ as a gain medium in CaF2 ceramic lasers.

Conclusions:

Nd3+-activated CaF2 ceramics are viable for laser applications.
This work represents the first demonstration of a Nd3+-activated CaF2 ceramic laser.
The developed ceramics show potential for future photonic devices.