Real-time spectral analysis of ultrafast pulses using a free-space angular chirp-enhanced delay

Optics Letters
Yiqing Xu, Stuart G Murdoch

Abstract

Frequency-to-time mapping is a powerful technique for observing ultrafast phenomena and nonrepetitive events in optics. However, many optical sources operate in wavelength regions, or at power levels, that are not compatible with standard frequency-to-time mapping implementations. The recently developed free-space angular chirp-enhanced delay (FACED) removes many of these limitations and offers a linear frequency-to-time mapping in any wavelength region where high-reflectivity mirrors and diffractive optics are available. In this work, we present a detailed formulation of the optical transfer function of a FACED device. Experimentally, we verify the properties of this transfer function and then present simple guidelines to guarantee the correct operation of a FACED frequency-to-time measurement. We also experimentally demonstrate the real-time spectral analysis of femtosecond and picosecond pulses using this system.

References

Dec 14, 2007·Nature·D R SolliB Jalali
Jan 27, 2017·Light, Science & Applications·Jiang-Lai WuKevin K Tsia

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Citations

Jul 11, 2021·The Review of Scientific Instruments·Junwei RenJianye Zhao

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