TY - JOUR
T1 - Accurately identifying mode indices of Laguerre-Gaussian beams via weak measurements
AU - Wang, Bo
AU - Li, Pengyun
AU - Chen, Tian
AU - Zhang, Xiangdong
N1 - Publisher Copyright:
© 2017 IOP Publishing Ltd.
PY - 2017/5
Y1 - 2017/5
N2 - We propose an efficient method to accurately identify two mode indices (p and l) of Laguerre-Gaussian (LG) beams simultaneously with weak value measurement (WVM). Concise relations between the spatial displacements from the WVM and two mode indices of LG beams have been obtained. Compared with the traditional measurements, the advantage of using our method is that LG beams with large p and l can be identified precisely. A joint spatial WVM with a looser approximate condition has been presented, which realizes better identification than the individual spatial WVM with correction terms or strict approximation. Furthermore, the signal-to-noise ratio (SNR) of the spatial WVM is also discussed.
AB - We propose an efficient method to accurately identify two mode indices (p and l) of Laguerre-Gaussian (LG) beams simultaneously with weak value measurement (WVM). Concise relations between the spatial displacements from the WVM and two mode indices of LG beams have been obtained. Compared with the traditional measurements, the advantage of using our method is that LG beams with large p and l can be identified precisely. A joint spatial WVM with a looser approximate condition has been presented, which realizes better identification than the individual spatial WVM with correction terms or strict approximation. Furthermore, the signal-to-noise ratio (SNR) of the spatial WVM is also discussed.
KW - Laguerre-Gaussian beams
KW - identification of mode indices
KW - weak value measurement
UR - http://www.scopus.com/inward/record.url?scp=85018293279&partnerID=8YFLogxK
U2 - 10.1088/2040-8986/aa630c
DO - 10.1088/2040-8986/aa630c
M3 - Article
AN - SCOPUS:85018293279
SN - 2040-8978
VL - 19
JO - Journal of Optics (United Kingdom)
JF - Journal of Optics (United Kingdom)
IS - 5
M1 - 055603
ER -