Title: High-speed measurement of rotational anisotropy nonlinear optical harmonic generation using position-sensitive detection

Journal Article · · Optics Letters
 [1];  [2];  [3];  [2]
  1. California Institute of Technology (CalTech), Pasadena, CA (United States); California Institute of Technology
  2. California Institute of Technology (CalTech), Pasadena, CA (United States)
  3. University of Cambridge (United Kingdom)

We present a method of performing high-speed rotational anisotropy nonlinear optical harmonic generation experiments at rotational frequencies of several hertz by projecting the harmonic light reflected at different angles from a sample onto a stationary position-sensitive detector. The high rotational speed of the technique, 103 to 104 times larger than existing methods, permits precise measurements of the crystallographic and electronic symmetries of samples by averaging over low frequency laser-power, beam-pointing, and pulse-width fluctuations. As a result, we demonstrate the sensitivity of our technique by resolving the bulk fourfold rotational symmetry of GaAs about its [001] axis using second-harmonic generation.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
Alfred P. Sloan Foundation (A.P. Sloan Foundation); Army Research Office (ARO); Gordon and Betty Moore Foundation; National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0010533
OSTI ID:
2473679
Journal Information:
Optics Letters, Journal Name: Optics Letters Journal Issue: 20 Vol. 40; ISSN 0146-9592
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

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