12 May 2006 Precision laser ranging using extremely chirped pulses from chirped fiber Bragg gratings
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Spectrally resolved interferometry combining up-chirped and down-chirped pulses allows for millimeter range resolution in laser ranging applications. Key in our approach is the use of temporally stretched optical pulses of 5 nanoseconds in duration. These stretched pulses were obtained from a femtosecond semiconductor mode-locked laser and were up-chirped and down-chirped using a chirped fiber Bragg grating and recombined to realize spectral interferometry. This approach provides a means to achieve the high pulse energies required for a laser radar application which are easy to achieve using nanosecond pulses but maintains the high spatial resolution associated with femtosecond optical pulses.
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Leonard M. Kisimbi, Leonard M. Kisimbi, Kyungbum Kim, Kyungbum Kim, Luis C. Archundia, Luis C. Archundia, Shinwook Lee, Shinwook Lee, Peter J. Delfyett, Peter J. Delfyett, } "Precision laser ranging using extremely chirped pulses from chirped fiber Bragg gratings", Proc. SPIE 6243, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications II, 62430U (12 May 2006); doi: 10.1117/12.673763; https://doi.org/10.1117/12.673763

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