chanelink logo
CHANELINK
English

Breakthrough development of terahertz quantum cascade lasers

931
2024-01-04 14:00:18
See translation

With the development of groundbreaking components for terahertz quantum cascade lasers, a huge leap has been made in the field of laser technology. A group of researchers have successfully designed a broadband single-chip external coupler with the potential to redefine the functionality of terahertz QCL.

The new external coupler is fundamentally based on planar bimetallic waveguides. Its design is specifically aimed at addressing the long-term challenges of reflectivity design and broadband narrow beam transmission in terahertz QCL. The outstanding feature of this external coupler is its ability to fine tune the mirror reflectivity of the waveguide. This is achieved by using efficient reverse design algorithms to shape the end face.

The terahertz laser radiation generated by the system is combined with broadband patch array antennas. The combination of these components leads to the convenience of surface emission. The entire system, including all its components, has been optimized to support octave frequency crossing in the range of 2-4 THz.

These advances have been put into practice through demonstrations of broadband surface emitting terahertz quantum cascade laser frequency combs. This special laser frequency comb has already demonstrated impressive performance indicators. It can output a power of 13 milliwatts and has an optical bandwidth of over 800 gigahertz and a single lobe far-field mode. It still maintains a beam divergence of less than 20 degrees in both horizontal and vertical dimensions.

In addition, this work plays a crucial role in the empirical observation of terahertz waves generated in a cascaded manner under non collinear phase matching conditions in terahertz parameter generators. Researchers effectively induce cascades using high-power seed beams to detect new high-order terahertz waves near the end face.

This development is a major step forward in the fields of terahertz wave sources, parameter detection, and amplification. It not only enhances the output power of terahertz sources, but also provides a way for theoretical exploration of parameterized TH wave generation.

This breakthrough represents significant progress in the field of laser technology and may pave the way for new possibilities for terahertz applications. It reflects the intricate interaction between technology and humanity, further blurring boundaries and expanding our understanding of possibilities.

Source: Laser Net

Related Recommendations

  • XLight raises $40 million in financing to develop new EUV light sources

    xLight, a US startup aiming to commercialize particle accelerator driven free electron lasers (FELs) for use in semiconductor production, says it has raised $40 million in a series B round of venture funding.The Palo Alto, California, firm said that the support would enable it to develop a prototype next-generation light source capable of emitting at extreme ultraviolet (EUV) wavelengths that are ...

    07-23
    See translation

  • The carbon dioxide laser market is expected to reach 7.1 billion US dollars by 2033

    The carbon dioxide laser market will show significant elasticity and sustained growth in the next decade, with a compound annual growth rate of 3.6% expected from 2023 to 2033.This impressive prediction indicates the persistent demand and expanding application of carbon dioxide lasers in various industries.By the end of 2033, the market is expected to reach a significant valuation of $7.1 billion,...

    2023-10-27
    See translation

  • AMC Theatres launches advanced laser projection technology upgrades

    AMC Cinema has long been known as the largest cinema operator in the United States and the world, and has completed upgrades to almost all its venues in the broader Chicago area, including advanced laser projection technology.The technological reform of this chain of stores has made Chicago one of the first areas in AMC's footprint to benefit from CinIonic's cutting-edge projection technology.In e...

    2023-12-23
    See translation

  • Danish scientists have created solar cells based on selenium using a new laser annealing technique

    A team of scientists at the Technical University of Denmark has created a selene-based solar cell by replacing thermal annealing with a new laser annealing strategy."In our work, we investigated the potential of this laser annealing strategy specifically for selenium thin film solar cells, and we report a new world record for fill factor, a new world record for ideal factor, and the most advanced ...

    2023-09-06
    See translation

  • CO2 laser cutting machine for battery shell shaped parts: an innovative tool in energy technology manufacturing

    The development of new energy technology has made battery technology the engine for advancing clean energy. In battery manufacturing, the cutting of battery shell shaped parts is a crucial step. CO2 laser cutting machines have become an innovative tool for promoting the development of this field due to their high efficiency and precision. This article will delve into the important characteristics ...

    2023-12-25
    See translation