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Optics Letters

Optics Letters


  • Vol. 23, Iss. 9 — May. 1, 1998
  • pp: 676–678

Simultaneous measurement of amplitude and phase in surface second-harmonic generation

Jun Chen, Susumu Machida, and Yoshihisa Yamanoto  »View Author Affiliations

Optics Letters, Vol. 23, Issue 9, pp. 676-678 (1998)

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The intensity and the phase in surface second-harmonic generation were simultaneously measured by use of an ac optical balanced homodyne detection system. In this system the surface second-harmonic wave was superimposed upon a local oscillator wave generated by a barium borate nonlinear optical crystal and then detected as an interference signal. Extremely high sensitivity of 3 aW (6 photons/s) and high precision were achieved by use of a lock-in amplifier, in which an interference signal of fundamental waves was used as a reference signal. Simultaneous measurement of the intensity and the phase in surface second-harmonic waves generated from native-oxidized Si(111) surfaces is demonstrated.

© 1998 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(190.0190) Nonlinear optics : Nonlinear optics

Jun Chen, Susumu Machida, and Yoshihisa Yamanoto, "Simultaneous measurement of amplitude and phase in surface second-harmonic generation," Opt. Lett. 23, 676-678 (1998)

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