28 June 2015 to 3 July 2015
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016

Supercontinuum pulse compression

1 Jul 2015, 14:40
20m
Oral Presentation Track C - Photonics Photonics

Speaker

Mr Ruan Viljoen (Stellenbosch University)

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Using the supercontinuum (white light) output from of an all-normal dispersion photonic crystal fibre (PCF) provides the platform to create ultrashort pulses around the order of a few fs. Due to extreme dispersion of the pulse in the PCF, chirp compensation is required to create such an ultra short pulse. This is realised experimentally by having the white light propagate through a 4f-shaper setup combined with a computer controlled one dimensional spatial light modulator in order to determine the amplitude and phase of the pulse. To calculate the phase of the dispersed pulse we apply an iterative procedure called multiphoton intrapulse interference phase scan (also known as MIIPS). We can use the 1D SLM to correct for this pulse dispersion using the determined phase and in so doing compress our pulse to produce bandwidth limited output pulses. This presentation will focus on the experimental realisation of compressing the pulse using a 4f-shaper-1D SLM setup, specifically how the phase correction is applied to our stretched pulses. White light generation and the MIIPS procedure will be briefly discussed in order to provide a general understanding of this pulse compressor.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

MSc

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

No

Main supervisor (name and email)<br>and his / her institution

Erich Rohwer egr@sun.ac.za, University of Stellenbosch

Primary author

Mr Ruan Viljoen (Stellenbosch University)

Co-authors

Dr Alexander Heidt Heidt (Laser Research Institute, Physics Department, University of Stellenbosch) Dr Dirk-Mathys Spangenberg (University of Stellenbosch) Prof. Erich Rohwer (University of Stellenbosch) Dr Peter Baricholo (National University of Science and Technology, Stellenbosch University) Dr Pieter Neethling (Laser Research Institute, University of Stellenbosch)

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