We demonstrate that monolayer detection by optical second-harmonic generation is possible even with a 20-mW cw diode laser. Using a focused scanning laser beam, we also demonstrate a new method of monolayer surface microscopy. The same experiments suggest the possibility of an optical monolayer memory device.
© 1986 Optical Society of America
Original Manuscript: October 22, 1985
Manuscript Accepted: November 26, 1985
Published: February 1, 1986
G. T. Boyd, T. W. Hänsch, and Y. R. Shen, "Continuous-wave second-harmonic generation as a surface microprobe," Opt. Lett. 11, 97-99 (1986)