You are here : News  >  Growth of 8-Inch CaF2 Single Crystal

Growth of 8-Inch CaF2 Single Crystal

May 19 2021 38 views

ICC has long been committed to the growth and processing of fluoride optical crystals and the performance research of related components.In 2020, the growth process bottleneck of calcium fluoride crystal was broken through, and the Bridgman method was used to realize the growth of 8-inch <111>and<100> crystal to single crystal of calcium fluoride.

Calcium fluoride (CaF2) crystal is a kind of excellent optical material.

In this investigation, an 8-inch(20.32 cm) CaF2 single crystal was grown by the Bridgman method.

The crystal has complete appearance and no macroscopic defects such as cracking and scattering.

After orientational cutting, a transparent cylindrical crystal blank with diameter of 40 mm×6 mm was obtained, the blank sample was annealed twice and then polished to obtain the final sample.

The ultraviolet-visible-near infrared transmittance, optical homogeneity, and average stress birefringence were measured.

The results show that the transmittance at 200 nm reaches 90%.

The average stress birefringence is less than 0.5 nm/cm. The optical homogeneity reaches 2.63×10-6.

 

 

 

 

 

 

 

 

              Scan the QR code to download the full text.

Related Posts

>
<
ICC has participated in Munich and Shanghai Optical Expo 2021
ICC has participated in Munich and Shanghai Optical Expo 2021
The exhibition site introduced our company's important achievements in crystal growth and laser fields through novel enterprise picture album, high-quality crystal display and other ways, focusing on the display of vibroscopes, wafers, large and small lenses, deep ultraviolet calcium fluoride, large size magnesium fluoride single crystal, etc., which caused many professional visitors to stop and consult, exchange and negotiation;At the same time, the application prospect of photoelectric industry is actively discussed.
Intrinsic Crystals - Expansion of Human Infrared Vision
Intrinsic Crystals - Expansion of Human Infrared Vision
We are China's largest fluoride crystal materials, components supplier; Important supplier of optical Si and Ge crystal materials and components.