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@article{Damzen:2019:2040-8986/ab5c8d,
author = {Damzen, M and Kerridge-Johns, W and Geberbauer, J},
doi = {2040-8986/ab5c8d},
journal = {Journal of Optics},
pages = {1--9},
title = {Vortex mode transformation interferometry},
url = {http://dx.doi.org/10.1088/2040-8986/ab5c8d},
volume = {22},
year = {2019}
}

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TY  - JOUR
AB  - Whilst  many  techniques  exist  for  generation  of  an  optical  vortex,  there  remains  a  need  for new devices and methods that can also provide vortex generation withhigher powers, greater flexibility  of  wavelength,  and  generation  beyondthe  lowest-order  Laguerre-Gaussian 01modeto  address  a  broader  range  of  practical  applications.This  work  revealshow  an all-mirror  based  interferometricmode  transformation   system  can provide these  propertiesincludingrevealing,  for  the  first  time,the  generation  ofa  much  richer  set  of vortex mode patterns  than  might  have  been  thought  possible  previously.Anew developed theoreticalformulation, confirmed with  excellent  agreement by experimental  demonstrationsin  an imbalanced  Sagnac  interferometer,showsinterferometric  transformation  is  possible  for  all orders  of  Laguerre-Gaussian 0modes into a  rich  set  of high  quality higher-order  vortex and  vortex  superposition.  The  interferometric  approachis  shown  to  be  configurabletoincrease  or decrease  vorticity.  The  new  mathematical  formulation provides  the  ability  to perform a fullmodal power analysis of both the mode-transformed transmitted vortex and the complementary reflected  beam  at  the  Sagnac  beamsplitter  port.A  discussion  is  made  on  the origin  of  the  orbital  angular  momentum transferred  to  the  vortex  output from  the  Sagnac beamsplitter.
AU  - Damzen,M
AU  - Kerridge-Johns,W
AU  - Geberbauer,J
DO  - 2040-8986/ab5c8d
EP  - 9
PY  - 2019///
SN  - 1464-4258
SP  - 1
TI  - Vortex mode transformation interferometry
T2  - Journal of Optics
UR  - http://dx.doi.org/10.1088/2040-8986/ab5c8d
UR  - https://iopscience.iop.org/article/10.1088/2040-8986/ab5c8d
UR  - http://hdl.handle.net/10044/1/75405
VL  - 22
ER  -

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