Title :
Homodyne detection of second-harmonic generation as a probe of the vector character of electric fields
Author :
Yotk, N. ; Dadap, Jerry I. ; Shan, Jerry ; Weling, A.S. ; Nahata, Ajay ; Heinz, T.F.
Author_Institution :
Columbia Univ., New York, NY, USA
Abstract :
Summary form only given. Ever since its first observation, optical second-harmonic generation (SHG) has been demonstrated to be a sensitive probe of electric fields in centrosymmetric media. Recent investigations have extended the capability of electric field-induced SHG (EFISH) to measure ultrafast electrical pulses and time-varying microwave electric-fields, with a time resolution limited only by the laser pulse duration. In this paper, we describe two interrelated advances in this method for probing electric fields: (1) a scheme for linearizing the relationship between the electric field and SHG intensity; and (2) an approach for determining the vector nature of the electric field. Measurements have been carried in silicon samples to demonstrate experimentally these improvements.
Keywords :
electric field measurement; electro-optical effects; homodyne detection; optical harmonic generation; silicon; EFISH signal; SHG intensity; Si; centrosymmetric media; electric field-induced SHG; homodyne detection; linearized response; optical second-harmonic generation; time-varying microwave electric-fields; ultrafast electrical pulses; vector nature; Electric variables measurement; Masers; Microwave measurements; Optical harmonic generation; Optical pulses; Optical sensors; Probes; Pulse measurements; Time measurement; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-576-X
DOI :
10.1109/QELS.1999.807618