简体中文

Shanghai Institute of Optics and Mechanics proposes a new solution for quartz glass as a visible light laser material

890
2024-06-05 15:33:45
查看翻译

Recently, Hu Lili, a research group of the Advanced Laser and Optoelectronic Functional Materials Department of the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, proposed a new scheme based on rare earth ions Dy3+doped quartz glass as a yellow laser material, and the relevant research results were published in the Journal of the American Ceramic Society as "Effect of P/Al ratio on the X ray induced darkness in Dy doped silica glasses at visible wavelengths".

At present, Dy3+doped yellow light lasers have important application potential in fields such as Bose Einstein condensation and photocoagulation therapy. Fluoride fiber matrix is widely used as the main material for visible light gain fibers due to its low phonon distribution. However, fluoride optical fibers have limitations such as poor chemical stability and mechanical properties, as well as harsh preparation conditions, which greatly increase the cost and difficulty of preparation. In contrast, quartz glass matrix has achieved rapid development due to its excellent physical and chemical properties, mechanical properties, and optical properties, and has successfully achieved yellow light laser output of Dy3+ions. However, Dy3+doped quartz fibers suffer from photon darkening under blue light excitation, which limits the further improvement of output power. Therefore, how to suppress light dimming has become a key scientific problem that urgently needs to be solved in the field of visible light lasers.

The research team proposes a new scheme for anti photon darkening Dy3+doped quartz glass. This scheme significantly reduces the absorption loss caused by irradiation by increasing the P/Al ratio, suppressing the valence change of Dy ions and the formation of defects such as Al OHC from within the glass matrix. In quartz glass, Al is a commonly used rare earth ion dispersant that can improve the dispersion and solubility of rare earth ions. However, due to the mismatch between the valence state of Al3+in quartz glass and the matrix Si, defects such as hole center Al-OHC are easily generated after absorbing a certain amount of energy (blue light, ultraviolet radiation). The introduction of P can form a valence equilibrium and stable [PAlO4] structural group with Al, which suppresses the formation of Al related defects and improves the anti darkening performance of Dy doped quartz glass. This work provides key materials and method support for visible light fiber lasers.

The relevant research has been supported by projects such as the National Natural Science Foundation of China.

Figure 1: Increasing the P/Al ratio suppresses defects induced by irradiation in quartz glass

Source: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

相关推荐
  • Dazu Photonics launched the third generation of high power fiber laser successfully increased the product power to 50kW

    In recent years, with the vigorous development of new energy and other industries, the improvement of environmental awareness and the increasing demand for new applications, the demand for fiber lasers in intelligent manufacturing is increasing, and the demand for power is also increasing, and high-power fiber lasers can significantly improve production efficiency and are widely sought after by th...

    2023-09-02
    查看翻译
  • Researchers have developed a new type of frequency comb that is expected to further improve the accuracy of timing

    The chip based device, known as the frequency comb, measures the frequency of light waves with unparalleled accuracy, completely changing timing, detection of exoplanets, and high-speed optical communication.Now, scientists and collaborators from the National Institute of Standards and Technology in the United States have developed a new method for manufacturing combs, which is expected to improve...

    2024-03-15
    查看翻译
  • Lameditech of South Korea was listed on the KOSDAQ exchange on the 17th

    On June 11, 2024, Korean laser medical equipment manufacturer Lameditech successfully completed its initial public offering and was listed on the KOSDAQ exchange on the 17th.Last month, its public offering price was fixed at 16000 Korean won. In this public offering, Lameditech issued a total of 1298000 shares, raising approximately 20.8 billion Korean won. Since Lameditech's debut on KOSDAQ, as o...

    2024-06-26
    查看翻译
  • Amazon's Kuiper Program Successfully Tested Satellite Space Laser

    SpaceX and its billionaire CEO Elon Musk may finally have reason to look back in the satellite internet competition. On Thursday, Amazon revealed that it had successfully used a space laser technology called "Optical Intersatellite Link" to transmit connections between two Kuiper Program satellites in low Earth orbit, located 621 miles apart, at a speed of 100 gigabits per second. This is approxim...

    2023-12-18
    查看翻译
  • Laser ablation helps to trace the origin of medieval metals

    Archaeologists have long wondered why the people of Anglo Saxon England began using more silver coins and fewer gold coins between 660 and 750 AD. Researchers in Europe now say they have developed a method to help find the answer. This technology combines laser ablation with traditional trace element analysis to match the isotopic abundance of silver bars in coins with known sources of metal ores ...

    2024-04-13
    查看翻译