Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Treatment method for improving crystallinity and optical transmittance of mercurous halide single crystal

A technology for single and processing methods of mercury halide, which is applied in the field of processing to improve the crystallinity and optical transmittance of mercury halide single crystals, and can solve the problem of not being able to solve the darkening characteristics of mercury halide or restore the performance of darkened crystals, device preparation and application adverse effects, low crystal quality, etc., to achieve the effect of crystallinity and optical transmittance improvement, optical transmittance recovery, and low temperature requirements

Active Publication Date: 2021-04-13
SHANDONG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The half-height width of the rocking curve of the mercury halide series crystal is larger, indicating that the crystal quality is lower
2) Mercury halide crystals have the phenomenon of crystal darkening when exposed to light, which will have an adverse effect on its device preparation and application
However, there is currently no measure that can solve the darkening characteristics of mercury halide or restore the performance of darkened crystals.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Treatment method for improving crystallinity and optical transmittance of mercurous halide single crystal
  • Treatment method for improving crystallinity and optical transmittance of mercurous halide single crystal
  • Treatment method for improving crystallinity and optical transmittance of mercurous halide single crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The processing method for improving the crystallinity and optical transmittance of mercury bromide single crystal, the steps are as follows:

[0034] (1) Mercury bromide crystal treatment

[0035] Use SYJ-150 low-speed diamond cutting machine to Ф35×40mm 3 Mercury bromide crystal is cut to get 5×5×2mm 3 mercurous bromide chips. Use sandpaper with a roughness of 7000 mesh to roughly polish the cut wafers to remove cutting scratches, and then use Al with a particle size of 0.5 μm 2 o 3 Polish the wafer finely with the ethanol suspension of polishing powder, and rinse the wafer surface with ethanol after polishing.

[0036] (2) Post-annealing treatment

[0037] Place the double-sided polished mercury bromide wafer in the pretreated high-purity quartz crucible, and wait for the vacuum degree in the quartz crucible to drop to 10 -4 Below Pa, sinter and seal the quartz crucible and place it in a multi-temperature zone vacuum annealing furnace for post-annealing treatmen...

Embodiment 2

[0042] With the processing method described in embodiment 1, the difference is:

[0043] Replace the single crystal of mercurous bromide with the crystal of mercurous chloride.

Embodiment 3

[0045] With the processing method described in embodiment 1, the difference is:

[0046] Replace mercurous bromide single crystals with mercurous iodide crystals.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a treatment method for improving crystallinity and optical transmittance of a mercurous halide single crystal, which comprises the following steps: placing the mercurous halide single crystal in a multi-temperature-zone vacuum annealing furnace, heating to 150-180 DEG C, and carrying out annealing treatment for 90-120 hours; and slowly cooling the annealed mercurous halide single crystal to room temperature. The half-peak width of an X-ray single crystal swing curve of the annealed mercurous halide crystal is obviously reduced, the crystallinity of the crystal is greatly improved, crystal defects are eliminated to a certain extent, and the optical transmittance of the mercurous halide crystal darkened in light is recovered through annealing aftertreatment, so that the optical transmittance of the mercurous halide crystal which is darken when meeting light is recovered, and the crystal transmittance is obviously improved. The method has low requirements on temperature, and has the advantages of simplicity, convenience and easiness in control. By adopting the method, the mercurous halide crystal with high crystallinity and optical transmittance can be obtained, which is of great significance to the preparation and application of a mercurous halide crystal acousto-optic device.

Description

technical field [0001] The invention relates to a treatment method for improving the crystallinity and optical transmittance of a mercury halide single crystal, and belongs to the field of crystal defect elimination and device performance improvement. Background technique [0002] Acousto-optic devices are a type of optical components that use ultrasonic waves to control the frequency, direction and amplitude of light beams. It can be mainly divided into acousto-optic modulator, acousto-optic deflector, acousto-optic frequency shifter and acousto-optic tunable filter. Acousto-optic tunable filters that can be used for spectral imaging are widely used in military camouflage target reconnaissance, laser remote sensing, aerospace exploration, and environmental monitoring. It has high diffraction efficiency, fast data acquisition speed, fast light splitting speed and compact structure , The advantages of easy integration. Large-size, high-performance acousto-optic crystals are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C30B33/02C30B29/12
CPCC30B33/02C30B29/12
Inventor 张国栋刘琳李荣臻陶绪堂
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com