English

Microcomb launches a simplified design for powerful lasers based on chips

1122
2024-05-25 14:49:56
See translation

Researchers at the University of Rochester have created new micro comb lasers that go beyond previous limitations and have simple designs suitable for various applications. The research results are published in Nature Communications.

Optical frequency combs are optical measurement instruments that have revolutionized atomic clocks, spectroscopy, metrology, and other fields. However, the difficulty of creating frequency comb generators at the semiconductor level limits their application in everyday technologies such as handheld electronic devices.

What is a micro comb?
Optical frequency combs generate spectra. They are composed of several coherent beams that are evenly spaced and adjusted to different colors or frequencies. The resulting shape is similar to the teeth on a hair comb. Scientists have been developing micro combs, a miniaturized version of this technology that can be installed on small chips.

Although progress has been made in the design of micro comb prototypes, scientists have not yet created functional versions for practical applications. Some of these challenges include low power efficiency, limited controllability, slow mechanical response, and requirements for pre configuration of complex systems.

The simplified method has been developed by a group of scientists led by Professor Lin Qiang from the Institute of Optics and the Department of Electrical and Computer Engineering at the University of Rochester, who has developed a novel strategy to solve these problems in a single device.
The main author of this paper Lin's doctoral student Jingwei Ling claimed that previous methods often relied on injecting a single wavelength of laser into a nonlinear converter, which could then convert a single wavelength into multiple wavelengths to form an optical comb.

The simplicity of the "multi in one" micro comb laser reduces power requirements, lowers costs, and has excellent adjustability and turnkey operation.
The implementation of these micro comb lasers continues to pose challenges, especially in establishing manufacturing processes to generate such small components within the required manufacturing tolerance range. However, the researchers expect their equipment to be used in telecommunications systems and autonomous vehicle for light detection and ranging (LiDAR).

The Defense Advanced Research Projects Agency and the National Science Foundation of the United States provided support for this research.

Source: Laser Net

Related Recommendations
  • Revealing the essence of optical vortices: a step towards understanding the interaction between light and matter

    In a groundbreaking scientific study published in Volume 13 of the Scientific Report, researchers reported on the results of Young's double slit interference experiment using oscillating vortex radiation under a photon counting system. The experiment involves using a spiral oscillator to emit second harmonic radiation in the ultraviolet range. Using an ultra narrow bandpass filter in the low curre...

    2023-12-29
    See translation
  • The world's first 40000 watt groove laser cutting machine is put into production in China

    On the morning of August 26th, the world's first large-scale 40000 watt groove laser cutting machine production ceremony was successfully held at Shandong Century Zhenghua Metal Technology Co., Ltd. located in Zhoucun District, adding another boost to the rapid development of Zhoucun's stainless steel industry chain.Source:博览新闻

    2023-08-28
    See translation
  • Laser Swing Welding: Principles, Characteristics, and Applications

    Application backgroundLaser swing welding technology was born out of the urgent demand for welding quality and efficiency in modern manufacturing industry. Traditional welding technology has shortcomings in precision, strength, and complex structures, which has led to the rapid application of laser welding in various fields. However, it still has defects such as pores and cracks, and has limitatio...

    2024-12-30
    See translation
  • HENGTONG listed on the Fortune Global 500 list of brands

    Recently, the 2024 (21st) World Brand 500 ranking list exclusively compiled by World Brand Lab was released in New York, USA. HENGTONG brand participated in the selection for the first time, standing out from more than 8000 participating brands in 32 countries worldwide and ranking 395th on the "Top 500 World Brands" list. This year, there are a total of 21 new brands on the global list, of whic...

    2024-12-17
    See translation
  • Graphene terahertz absorber and graded plasma metamaterials

    Optical metamaterials are an effective way to utilize their superior photon capture capabilities. Therefore, perfect absorbers can be achieved through nanoscale resonant plasmas and metamaterial structures.Metamaterial perfect absorbers (MPAs) are typically composed of periodic subwavelength metals (such as plasma superabsorbers) or dielectric resonance units. Compared with static passive physical...

    2024-05-20
    See translation