English

Progress in the research and development of high-performance electrically pumped topology lasers in semiconductor manufacturing

1069
2024-07-11 11:48:51
See translation

Topological laser (TL) is an ideal light source for future new optoelectronic integrated chips, designed and manufactured using topological optics principles to obtain robust single-mode lasers. Electrically pumped topology lasers have become a research hotspot due to their small size and ease of integration, but topology lasers based on electrical injection are still in the early stages of research. Therefore, it is crucial to develop design ideas and technical solutions to improve the output power of electrically pumped topology lasers.

Recently, Liu Fengqi, a researcher from the Institute of Semiconductor, Chinese Academy of Sciences, has made progress in the research and development of high-performance electrically pumped topology lasers. This study innovatively introduces the design of surface metal Dirac topological cavities (SMDCs), which are prepared on the surface metal layer to preserve the integrity of the active region, providing sufficient gain for achieving high-power output, thereby solving the problem of power improvement of electrically pumped topological lasers limited by active region etching; By utilizing the strong coupling between SMDC and the active region and optimizing the design of absorption edge and topological cavity parameters under low effective refractive index difference, robust topological interband mode operation was achieved, which was validated in the robust single-mode laser spectrum and far-field mode of topological lasers with different structural parameters.

Due to the fact that the SMDC design does not damage the active region and the SMDC structure has high surface radiation efficiency, the device achieved a single mode surface emission peak power of 150 milliwatts. In addition, the device has a vortex polarization far-field, and by introducing phase modulation, while maintaining the vortex polarization characteristics of the topological laser, a symmetrical adjustable far-field is obtained. This device is an ideal on-chip vortex polarized light source.

This work provides new ideas for the research and development of high-performance electrically pumped topology lasers, and has positive significance for promoting the development and application of high-performance electrically pumped topology lasers. The relevant research results are titled High power electrically pumped terahertz topological laser based on a surface metal Dirac vortex activity and published in Nature Communications. The research work was supported by the National Natural Science Foundation of China, the National Key R&D Program and the Youth Innovation Promotion Association of the Chinese Academy of Sciences.

Structure of Electric Pumped THz SMDC TL Device

Source: Institute of Semiconductor, Chinese Academy of Sciences

Related Recommendations
  • Rachel's latest laser welding and cutting machine processes thicker materials at lightning speed

    Rachel is a pioneer in laser technology solutions and is pleased to announce a significant update to its laser welding and cutting machines. These enhanced features aim to provide customers with faster turnaround time and higher accuracy, reaffirming Rachel Corporation's commitment to providing cutting-edge laser cutting and welding solutions to meet the needs of different industries.Lache Company...

    2024-04-07
    See translation
  • Shanghai Institute of Optics and Fine Mechanics has made progress in the field of femtosecond laser air filamentation self focusing threshold research

    Recently, the research team of the State Key Laboratory of Intense Field Laser Physics of the Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics has made progress in the research on the repetition rate dependent femtosecond laser air filamentation self focusing threshold. The relevant research results were published in Optics Express under the title "Pulse repetition rate ...

    2024-08-02
    See translation
  • Monport Laser's grand anniversary event ignited a boom in laser engraving industry

    Monport Laser, a leading manufacturer of laser engraving machines, is pleased to announce an exciting anniversary on its website. The event will mark the anniversary of Monport Laser and offer customers a range of exclusive offers and promotions. The event will highlight Monport Laser's commitment to innovation, customer satisfaction and the magic of laser engraving.The Monport Laser Anniversary...

    2023-08-04
    See translation
  • More penetrating than X-rays μ Meson imaging is expected to be advanced with high-power lasers

    μ Mesons are naturally occurring subatomic particles that can penetrate much deeper dense matter than X-rays. Therefore, μ Meson imaging can enable scientists to capture images of nuclear reactors, volcanoes, tsunamis, and hurricanes. However, this process is slow, as it occurs naturally μ The low flux of mesons requires several months of exposure time for the image.It is understood that ...

    2023-11-01
    See translation
  • MICRONICS launches its innovative SLS 3D printer product

    3D printing company Micronics announced the launch of its new Micron desktop selective laser sintering (SLS) 3D printer.The company stated that Micron is priced at $2999 and aims to bring industrial grade 3D printing capabilities to desktops for professionals and hobbyists. One of the main features of Micron is its ability to print complex objects without the need for supporting structures. This i...

    2024-06-17
    See translation