Assertion: ray laser | /r/HasProperty | device
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Source sentences:
text: An X-ray laser is a device that uses stimulated emission to generate or amplify electromagnetic radiation in the near X-ray or extreme ultraviolet region of the spectrum, that is, usually on the order of several of tens of nanometers (nm) wavelength.
text: In 2010, scientists at the SLAC National Accelerator Lab began some of the first experiments using the world’s first X-ray laser (a device that had been unveiled in September 2009).