In this section
See a list of publications below or visit the Photonics academic staff page and click on a particular member of staff to access their personal web page, which includes a list of their own publications.
@inproceedings{Geberbauer:2023:10.1117/12.2650889,
author = {Geberbauer, JWT and Murray, RT and Runcorn, TH and Kerridge-Johns, WR},
doi = {10.1117/12.2650889},
title = {Yb fiber vortex laser using an interferometric mode converting output coupler},
url = {http://dx.doi.org/10.1117/12.2650889},
year = {2023}
}
TY - CPAPER
AB - We apply mode transformation to an Yb fiber laser for direct generation of a first order vortex mode (LG<inf>01</inf>), yielding LG<inf>01</inf> power of 5 W at 96 % purity (from modal decomposition) with 16 W pumping. The laser used standard single mode Yb doped fibers operating at 1064 nm. A free-space Sagnac interferometer formed one reflector of the cavity by feeding back the internal Gaussian mode of the fiber laser and output coupling a LG<inf>01</inf> via interferometric mode transformation. It was stable over hours of operation and days of inactivity, and was insensitive to polarisation. The maximum output power was only limited through heating of a optical element, which could be mitigated with thermal management. We also show that additional spiral phase plates (SPPs) are a route to higher purity, higher order vortex modes than with SPPs alone due to improved intensity matching between LG<inf>01</inf> and higher order states.
AU - Geberbauer,JWT
AU - Murray,RT
AU - Runcorn,TH
AU - Kerridge-Johns,WR
DO - 10.1117/12.2650889
PY - 2023///
SN - 0277-786X
TI - Yb fiber vortex laser using an interferometric mode converting output coupler
UR - http://dx.doi.org/10.1117/12.2650889
ER -