Optics: measuring and testing – By light interference – Having light beams of different frequencies
Reexamination Certificate
2010-06-05
2011-11-22
Lee, Hwa (Department: 2886)
Optics: measuring and testing
By light interference
Having light beams of different frequencies
Reexamination Certificate
active
08064065
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
patent: 7738111 (2010-06-01), Bennett
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.
Christopher Dorrer, “Single-Shot Measurement of the elcetric 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 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.
Lawrence Livermore National Security LLC
Lee Hwa
Wooldridge John P.
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