On June 2nd 1970 a Bell Labs chemist arrived at his desk to find a note reading; ‘CW definite at 24°C’. Although the semiconductor laser had been invented in 1962, this was the first time that a continuous wave at room temperature had been achieved, so making the invention potentially useful. Bell Labs had other ...
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from Electronics Weekly https://www.electronicsweekly.com/blogs/mannerisms/yarns/the-evangelist-2018-03/
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