Structural and morphological characterization of Y1-xNdxAl3(BO3)4 micron-sized crystals powders obtained by the urea precipitation method and its random laser properties

In recent years, an unconventional excitation of trivalent neodymium ions ( N d 3 + ) at 1064 nm, not resonant with ground-state transitions, has been investigated with the unprecedented demonstration of a photon-avalanche-like (PA-like) mechanism, in which the temperature increase plays a fundamental role. As a proof-of-concept, N d A l 3 ( B O 3 ) 4 particles were used. A consequence of the PA-like mechanism is the absorption enhancement of excitation photons providing light emission at a broad range covering the visible and near-infrared spectra. In the first study, the temperature increase was due to intrinsic nonradiative relaxations from the N d 3 + and the PA-like mechanism ensued at a given excitation power threshold ( P t h ). Subsequently, an external heating source was used to trigger the PA-like mechanism while keeping the excitation power below P t h at room temperature. Here, we demonstrate the switching on of the PA-like mechanism by an auxiliary beam at 808 nm, which is in resonance with the N d 3 + ground-state transition 4 I 9 / 2 → { 4 F 5 / 2 , 2 H 9 / 2 } . It comprises the first, to the best of our knowledge, demonstration of an optical switched PA, and the underlying physical mechanism is the additional heating of the particles due to the phonon emissions from the N d 3 + relaxation pathways when exciting at 808 nm. The present results have potential applications in controlled heating and remote temperature sensing.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Structural and morphological characterization of Y1-xNdxAl3(BO3)4 micron-sized crystals powders obtained by the urea precipitation method and its random laser properties

Cited by 3 publications

References 58 publications

Investigating the structure-sensitive factors relevant to cryogenic laser operation of Yb3+ ions in oxide crystals

Investigating the structure-sensitive factors relevant to cryogenic laser operation of Yb3+ ions in oxide crystals

Energy-looping and photon-avalanche-like phenomena in Nd Y1.00-Al3(BO3)4 powders excited at 1064 nm

Optical switching a photon-avalanche-like mechanism in NdAl₃(BO₃)₄ particles excited at 1064 nm by an auxiliary beam at 808 nm

Contact Info

Product

Resources

About

Structural and morphological characterization of Y1-xNdxAl3(BO3)4 micron-sized crystals powders obtained by the urea precipitation method and its random laser properties

Cited by 3 publications

References 58 publications

Investigating the structure-sensitive factors relevant to cryogenic laser operation of Yb3+ ions in oxide crystals

Investigating the structure-sensitive factors relevant to cryogenic laser operation of Yb3+ ions in oxide crystals

Energy-looping and photon-avalanche-like phenomena in Nd Y1.00-Al3(BO3)4 powders excited at 1064 nm

Optical switching a photon-avalanche-like mechanism in NdAl3(BO3)4 particles excited at 1064 nm by an auxiliary beam at 808 nm

Contact Info

Product

Resources

About

Optical switching a photon-avalanche-like mechanism in NdAl₃(BO₃)₄ particles excited at 1064 nm by an auxiliary beam at 808 nm