B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus offers consumers yttrium-alumina-borate laser glasses with intense broadband luminescence under a manufacturing agreement and is looking for partners interested in a distribution services agreement.

B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus has developed yttrium-alumina-borate laser glasses, activated by Yb³⁺ ions, with intense broadband luminescence, intended for use as an active material for continuous-wave fiber lasers and microchip femtosecond lasers with high specific energy output, generating radiation in the near-infrared region of the spectrum.

Yttrium-alumina-borate laser glasses have the following features:
* reduced crystallization capacity, allowing to extract the fiber;
* low photo-bleaching and photo-darkening efficiencies;
* maximal quantum yield of Yb³⁺ ions luminescence is about 94%;
* low losses to co-operative luminescence of Yb–Yb pairs (two orders lower than for quartz glass under identical pumping
conditions);
* large effective half-width of the amplification band (33 nm, which is 1.5 times higher than the same parameter for ytterbium-alloyed crystals of huntite and yttrium-aluminum garnet);
* high values of thermal conductivity (0,73–0,95 W/m•K) and the threshold of laser-induced destruction of the surface (27 J/cm²);
* resistance to humid atmospheres and staining agents.

Laser radiation (at the wavelength of about 1060 nm with a threshold of about 60 W/mm2) was obtained on a thin plate of such glass in a «deaf» semispherical resonator with led pumping in quasi-continuous mode (differential efficiency of 12.5%) and Q-switching mode.

Spectra of glass generation in quasi-continuous mode (1-3), dependence of generation energy on pumping power:


Yttrium-alumina-borate laser glasses consists of the following components:

Chemical compound	Content, %
B2O3	57-62
Al2O3	27-33
La2O3 and/or Y2O3	1,0-9,5
Yb2O3	0,5-10,0

Applications area: as active media of lasers (including fiber lasers) generating radiation in the near-infrared region of the spectrum.

B.I.Stepanov Institute of Physics offers partners yttrium-alumina-borate laser glasses with intense broadband luminescence under a manufacturing agreement.

Catalogue of Developments & Services of «B.I. Stepanov Institute of Physics» 2022, p.81.

In the developed yttrium-alumina-borate laser glasses, the intensity of the cooperative luminescence of Yb³⁺ ions is 2 orders of magnitude lower than in the glasses closest in technical essence (Republic of Belarus/Russian Federation), which provides an advantage as an active element of near-infrared lasers operating in a single-pulse mode, and It is also promising for use under conditions of high population of the metastable state of the activator.

Patent of Repuplic of Belarus № 20761 dated 28.02.2017
Patent of Repuplic of Belarus № 22222 dated 30.10.2018
Patent of Russian Federation № 2548634 dated 20.04.2015
Patent of Russian Federation № 2576761 dated 10.03.2016

The directions of scientific research and development of the B.I.Stepanov Institute of Physics are currently:
* Laser physics, development and creation of laser systems and technologies for medicine, ecology, industry, metrology and information protection;
* Physical and nonlinear optics, the disclosure and use of the patterns of propagation of high-power laser radiation in various media;
* Optical spectroscopy, development and application of methods and instruments for studying the properties and structure of various materials, including biotissues;
* Nanooptics and Nanomaterials;
* Quantum optics, investigation of quantum properties of electromagnetic radiation in computer science and cryptography;
* Investigation of the structure and properties of atomic-molecular structures and the creation of new optical materials, systems, instruments and technologies on this base;
* Plasma physics and plasma technologies: investigation of the plasma interaction with fields and matter; development and application of methods for plasma diagnostics, development of technological applications of gas-discharge and laser plasma
* Micro- and optoelectronics: LED technology, solar cells, microwave technology, microelectromechanical and sensor systems and devices;
* Physics of Fundamental Interactions and Nuclear Reactions - Investigating the Structure of the Microcosm and the Universe.

The B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus has scientific contacts with many countries. At present, more than 50 agreements on scientific and technical cooperation have been signed with organizations from 15 countries.

The Institute develops, manufactures and supplies laser and optical instruments for various purposes, as well as innovative components for laser technology, to many countries of the world (Russia, China, Germany, France, the United States, Saudi Arabia, India, etc.).

Consumers interested in purchasing yttrium-alumina-borate laser glasses with intense broadband luminescence under a manufacturing agreement.

Partners interested in purchasing yttrium aluminum borate laser glasses with intense broadband luminescence under a distribution services agreement.