TeraHertz-ray lasers
Terahertz Ray Lasers with 400 Times Higher Gain than Before and Should Lead to Wider Commercialization
They said the novel device will have 400 times higher
"gain" (a measure of power) than that of the only coherent T-ray
sources existing today, called THz
Quantum Cascade Lasers.
"The
novel method to produce efficient T-ray emitters will enable the use of this
important imaging source for various applications, including security and
medical applications," he said.
1] T-rays are electromagnetic waves
with a wavelength shorter than microwave but longer than infrared.
2] They could be very attractive for
various imaging applications because they can penetrate substances ranging from
clothing and walls;
3] are harmless to humans and
therefore
4] can detect various chemicals,
especially explosives.
5] can be used for healthcare and
homeland security applications;
Thus, T-ray-based devices can detect hidden weapons and explosives, as well as improve safety in healthcare by allowing an unlimited number of exposures for medical examinations, something not possible with x-rays.
Despite all the advantages
of T-rays, they are barely used due to a lack of T-ray emitters that can
generate powerful, coherent and adjustable TeraHertz waves.
The HU invention overcomes
these limitations and portends the design of effective THz lasers, the
scientists maintain.
T-ray-based devices can detect hidden
weapons and explosives, as well as improve safety in healthcare by allowing an unlimited number of exposures for medical examinations, something not possible with x-rays.
"Tera Hertz rays are the imaging method of the future. They are comparable to x-rays in terms of their ability to penetrate opaque substances, but more importantly, they are harmless," said Yaacov Michlin, CEO of Yissum, the university's research development company, on Sunday.
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