By Chinese scientists developed the first Chinese high average power terahertz free electron laser device on Chengdu for the first time in Sichuan before the light saturation.After third party tests, the experiment is real and reliable, and the device runs stably.High average power THz free electron laser in China is saturated with light
Aug. 29, By Chinese scientists developed the first Chinese high average power terahertz free electron laser device on Chengdu for the first time in Sichuan before the light saturation.In September 20th, after testing expert on-site testing and research Chinese third industry 205th weapons, CTFEL 1.99THz, 2.41THz in the terahertz frequency device and 2.92THz three frequency points and stable operation, the average power is larger than 10W, the highest 17.9W; micro pulse peak power are larger than 0.5MW, up to 0.84MW.By adjusting the beam energy and magnetic field intensity, the output laser frequency can be adjusted continuously.
Terahertz (THz) radiation refers to electromagnetic radiation with frequencies in the 0.1THz 10THz range, located between the infrared and microwave bands, is not yet fully human understanding and good use of the last wave (light) spectral interval.Terahertz spectroscopy material (including the emission, transmission and reflection) contains rich physical and chemical information of related substances in response to this spectral band, explore new physics reveals the structure properties and has become a new research direction.Free electron laser (FEL) with continuously adjustable, high power, narrow linewidth, good directivity, the advantages of Pian Zhenqiang frequency, makes it possible to achieve the ideal high power terahertz THz source full coverage in the same device, the free electron laser is currently the most promising band high power tunable coherent light source.
CTFEL device is supported by the Ministry of science and technology of the national major scientific instruments and equipment development “special strong terahertz source of scientific instrument and equipment development” project, was launched in 2011.As a new type of coherent strong terahertz light source, CTFEL device has an important application prospect in the fields of materials, biomedicine and other fields.
