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Published on: March 20, 2017
Femtosecond pulse shaping in two dimensions: towards higher complexity optical waveforms.
V R Supradeepa1, Chen-Bin Huang, Daniel E Leaird
1School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA. venkatas@purdue.edu
Optics Express
|August 6, 2008
Summary
We developed a new Fourier pulse shaping apparatus for high-resolution, broad-bandwidth operation. This technology enhances waveform complexity and optical frequency comb applications in spectroscopic sensing.
Area of Science:
- Optics and Photonics
- Spectroscopy
- Waveform Engineering
Background:
- Traditional Fourier pulse shaping often faces trade-offs between spectral resolution and operational bandwidth.
- Achieving complex temporal and spectral control in optical pulses is crucial for advanced applications.
- Optical frequency combs offer precise spectral lines for sensing, but controlling a large number remains challenging.
Purpose of the Study:
- To introduce a novel Fourier pulse shaping apparatus enabling simultaneous high resolution and broad bandwidth.
- To demonstrate enhanced control over waveform complexity (temporal/spectral features).
- To explore the application of this apparatus in line-by-line pulse shaping with optical frequency combs.
Main Methods:
- Utilizing a two-dimensional geometry for dispersing frequency components.
- Employing a dual spectral disperser system combining high-resolution and broad-bandwidth capabilities.
- Conducting experiments with optical frequency combs for line-by-line pulse shaping.
Main Results:
- Demonstration of simultaneous high resolution and broad bandwidth operation.
- Significant improvements in achievable waveform complexity, indicated by the number of controllable temporal/spectral features.
- Successful line-by-line pulse shaping experiments with optical frequency combs.
Conclusions:
- The developed apparatus overcomes the resolution-bandwidth trade-off in Fourier pulse shaping.
- This technology significantly enhances the complexity of controllable optical waveforms.
- The apparatus offers a pathway to substantially increase the number of controllable spectral lines for optical frequency comb-based spectroscopic sensing.
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