Optics: measuring and testing – By light interference – Having light beams of different frequencies
Reexamination Certificate
2007-06-26
2010-06-15
Lee, Hwa S. A (Department: 2886)
Optics: measuring and testing
By light interference
Having light beams of different frequencies
C356S450000, C356S451000
Reexamination Certificate
active
07738111
ABSTRACT:
A new technique for capturing both the amplitude and phase of an optical waveform is presented. This technique can capture signals with many THz of bandwidths in a single shot (e.g., temporal resolution of about 44 fs), or be operated repetitively at a high rate. That is, each temporal window (or frame) is captured single shot, in real time, but the process may be run repeatedly or single-shot. This invention expands upon previous work in temporal imaging by adding heterodyning, which can be self-referenced for improved precision and stability, to convert frequency chirp (the second derivative of phase with respect to time) into a time varying intensity modulation. By also including a variety of possible demultiplexing techniques, this process is scalable to recoding continuous signals.
REFERENCES:
patent: 7411683 (2008-08-01), Dorrer
Corey V Bennett et al. “Principles of Parametric Temporal Imaging-PartII: System Performance” IEEE Journal of Quantum Electronics, IEEE Service Center, Piscata, NJ, US. vol. 36, No. 6, Jun. 2000—, XP011052434 ISSN: 0018-9797.
Bennett C V et al: “Up-conversion time lens demonstrates 12/spl times/magnification of 100 Gb/s data” Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94.
Conference Proceedings. IEEE Boston, MA, USA Oct. 31-Nov. 3, 1994, New York, NY, USA, IEEE, US, vol. 2, pp. 197-198, XP010220966 ISBN: 0-7803-147-0.
Christophe Dorrer, “Single-Shot Measurement of the electric field of optical waveforms by use of time magnification and heterodyning”. Optics Letters/vol. 31, No. 4/Feb. 15, 2006. pp. 540-542. 2006 Optical Society of America.
C.V. Bennett, B.H. Kolner, Principles of Parametric Temporal Imaging I. System Configurations. Sep. 17, 1999. UCRL-JC-135815 Pt 1. pp. 1-8.
C.V. Bennett, B.H. Kolner, Principles of Parametric Temporal Imaging II. System Performance. Dec. 6, 1999. UCRL-JC-135815 Pt 2. pp. 1-8.
A Lee Hwa S.
Lawrence Livermore National Security LLC
Wooldridge John P.
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