Schawlow, A. L. & Townes, C. H. Infrared and optical masers. Phys. Rev. 112, 1940–1949 (1958).
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Franken, P. A., Hill, A. E., Peters, C. W. & Weinreich, G. Generation of optical…
Schawlow, A. L. & Townes, C. H. Infrared and optical masers. Phys. Rev. 112, 1940–1949 (1958).
Google Scholar
Franken, P. A., Hill, A. E., Peters, C. W. & Weinreich, G. Generation of optical…