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Shim, Sang-Hee
Shim Research Lab
Research Interests
  • Super-resolution Optical Imaging
  • Single-molecule Biophysics
  • Ultrastructural Dynamics
  • Single-cell Systems Biology

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Femtosecond pulse shaping directly in the mid-IR using acousto-optic modulation

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Title
Femtosecond pulse shaping directly in the mid-IR using acousto-optic modulation
Author
Shim, Sang-HeeStrasfeld, DBFulmer, ECZanni, MT
Keywords
Acousto optic modulations; Femtosecond pulse; Pulse shaping; Waveforms
Issue Date
2006-03
Publisher
OPTICAL SOC AMER
Citation
OPTICS LETTERS, v.31, no.6, pp.838 - 840
Abstract
Pulse shaping directly in the raid-IR is accomplished by using a germanium acousto-optic modulator (Ge AOM) capable of programmable phase and amplitude modulation for IR light between 2 and 18 μm. Shaped waveforms centered at 4.9 μm are demonstrated in both the frequency and the time domains. With a 50% throughput efficiency, the Ge AOM can generate much more intense pulses with higher resolution than can indirect shaping methods. Furthermore, the phase stability of the shaped pulse proved sufficient for cross correlation with unshaped mid-IR pulses. Thus, phase- and amplitude-tailored pulses can now be readily incorporated into phase-sensitive experiments, such as heterodyned 2D IR spectroscopy.
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DOI
10.1364/OL.31.000838
ISSN
0146-9592
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BME_Journal Papers
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