In a BEC, positronium atoms behave in lockstep, so when one annihilates itself, the rest follow suit, producing a burst of laser radiation made of gamma rays. (newscientist.com)
The radius of propagation of near - infrared laser radiation in soft and tumor tissue (determined as a length that attenuates the laser fluence by 63 % relative to the fluence level near the fiber tip) was reported to be in the range of 5 - 8 mm [60 - 67]. (thno.org)
The researchers also demonstrated printed black phosphorus based nonlinear optical devices that can be easily inserted into lasers to act as ultra-quick optical shutters, converting a continuous beam of laser radiation into a repetitive series of very short bursts of light suited for industrial and medical applications, such as machining, imaging and sensing. (sciencedaily.com)