Hailey Baldwin Instagram Pic Style

Hailey Baldwin Instagram Pic Style

With the development of the maser, the next logical step was to employ the same physical principles to the amplification of visible light. One challenge was finding the correct atom or molecule, one that had a long-lived excited state at the right energy for the amplification of visible light. In 1957, Townes spoke to Gordon Gould, a graduate student at Columbia University, about Gould’s work using visible light to excite thallium atoms. Both men quickly realized that thallium might provide the key to a visible-light, or optical, maser. Townes worked with his brotherin- law, Arthur L. Schawlow, and researchers at Bell Labs. In 1958, Townes and Schawlow, a professor at Stanford University, described how masers could be designed to operate in the visible and infrared regions of the spectrum, but they did not produce a working device.

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