Purpose. Development of technology for nanostructuring chalcohalide glass media for multispectral devices for special purposes (optics, optoelectronics and photonics) with optimized functionality in the visible and mid-IR range – chalcohalide photonics technology.
Specifications. For capacitive chalcogenide glasses of the pseudo-binary cut GeS2-Ga2S3: the spectral range of functionality is from 700 nm to 8.5 µm. For CsCl-capacious chalcohalide glasses (80GeS2-20Ga2S3)100-x(CsCl)x: the spectral range of functionality is from 500 nm to 11.5 µm. For RE-activated chalcohalide glasses 65GeS2-65GeS2-25Ga2S3-10CsCl:Er3+: spectral range of functionality – from 450 nm to 11.5 µm; Spectral sensitivity of photoemission in the range of 1500-1600 nm when excited by radiation with a wavelength of 532 nm.
Application area. Research and experimental developments in the field of other natural and technical sciences.
Advantages. The spectral range of functionality of Ga-capacity chalcogenide glasses GeS2-Ga2S3 is shifted to the long-wave IR region of the spectrum (700 nm – 8.5 μm); the synthesized glasses have the ability to adapt electrically active activators such as rare earth ions, they are stable. . The spectral range of functionality of chalcohalide glasses of the composite series (80GeS2-20Ga2S3)100-x(CsCl)x has been returned to the visible part of the spectrum (500 nm – 11.5 µm); the synthesized glasses have the ability to form special optical media. The spectral range of functionality of chalcohalide glasses activated by rare earth ions of the optimized composition 65GeS2-65GeS2-25Ga2S3-10CsCl:Er3+ is realized by effective photoemission in the range of 1500-1600 nm upon excitation 5 resistant to crystallization, physical and chemical aging, as well as environmental factors.
Technical and economic effect. The main result of this development is a scientifically based methodology for the formation of controlled multifunctionality in glassy chalcohalide media due to compositionally-technologically optimized effects of intrinsic/impurity nanostructuring. A unified technological platform (synthesis of glass by melt hardening) makes it possible to obtain new materials with a long service life at minimal economic costs, materials with diverse functionality in a wide range from the visible to the IR region of the spectrum, which is especially important for the latest working environments for reproducible and highly reliable optoelectronic elements . , IR photonics, optics, biosensors and opto-telecommunications technology.
Description. Implementation of the chalcohalide platform in the technology of smelting alloys by the melt hardening method using the method of removing optical media of special purpose with functional micro-nano-inhomogeneities of water and house type: – first step – chalcogenide-based systems activated by galium GeS2-Ga2S3 with ceramic multispectral functionality, basic view – functionality of optimized glass (GeS2)0.8(Ga2S3)0.2; – the second step is the implementation of a mixed chalcogenide-halide platform in a system of nanocomposites of the GeS2-Ga2S3-CsCl type, the base sample is the functionality of the optimized glass 65GeS2-25Ga2S3-10CsCl; – the third step is the optimization of IR functionality in the GeS2-Ga2S3-CsCl chalcohalide system with the introduction of rare earth (RE) activators (Er3+ ions), the base sample is RE-activated chalcohalides of the 65GeS2-25G type in the IR spectrum region.