SAIP2015

Optimization of losses introduced by p absorbing mask in a Digital Laser

1 Jul 2015, 16:10

1h 50m

Board: C.323

Poster Presentation Track C - Photonics Poster2

Speaker

Mr July Bell (CSIR)

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

Yes

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 digital laser one can generate modes of any kind, namely, Laguerre-Gaussian modes. The laser was used generate Laguerre-Gaussian modes, and forced to only select fundamental mode LGp0, by using a mask made up of absorbing circle of with h. It is evident that forcing the fundamental mode of the cavity to be LGp0, reduce losses. Furthermore, circle of mask divided into N parts, show a dramatic reduce of losses, which results in lower threshold power. It is also evident that this does not necessary decrease or increase the slope efficiency of the laser.

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

No

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

PhD

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

Andrew Forbes
University of KwaZulu-Natal
AForbes1@csir.co.za