Measurement of the radial mode spectrum of photons through a phase-retrieval method

Saumya Choudhary, Rachel Sampson, Yoko Miyamoto, Omar S. Magaña-Loaiza, Seyed Mohammad Hashemi Rafsanjani, Mohammad Mirhosseini, Robert W. Boyd

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose and demonstrate a simple and easy-to-implement projective-measurement protocol to determine the radial index p of a Laguerre–Gaussian (LGl p) mode. Our method entails converting any specified high-order LG0 p mode into a near-Gaussian distribution that matches the fundamental mode of a single-mode fiber (SMF) through the use of two phase screens (unitary transforms) obtained by applying a phase-retrieval algorithm. The unitary transforms preserve the orthogonality of modes before the SMF and guarantee that our protocol can, in principle, be free of crosstalk. We measure the coupling efficiency of the transformed radial modes to the SMF for different pairs of phase screens. Because of the universality of phase-retrieval methods, we believe that our protocol provides an efficient way of fully characterizing the radial spatial profile of an optical field.

Original languageEnglish (US)
Pages (from-to)6101-6104
Number of pages4
JournalOptics Letters
Volume43
Issue number24
DOIs
StatePublished - Dec 15 2018
Externally publishedYes

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retrieval
photons
fibers
orthogonality
crosstalk
normal density functions
profiles

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Choudhary, S., Sampson, R., Miyamoto, Y., Magaña-Loaiza, O. S., Hashemi Rafsanjani, S. M., Mirhosseini, M., & Boyd, R. W. (2018). Measurement of the radial mode spectrum of photons through a phase-retrieval method. Optics Letters, 43(24), 6101-6104. https://doi.org/10.1364/OL.43.006101

Measurement of the radial mode spectrum of photons through a phase-retrieval method. / Choudhary, Saumya; Sampson, Rachel; Miyamoto, Yoko; Magaña-Loaiza, Omar S.; Hashemi Rafsanjani, Seyed Mohammad; Mirhosseini, Mohammad; Boyd, Robert W.

In: Optics Letters, Vol. 43, No. 24, 15.12.2018, p. 6101-6104.

Research output: Contribution to journalArticle

Choudhary, S, Sampson, R, Miyamoto, Y, Magaña-Loaiza, OS, Hashemi Rafsanjani, SM, Mirhosseini, M & Boyd, RW 2018, 'Measurement of the radial mode spectrum of photons through a phase-retrieval method', Optics Letters, vol. 43, no. 24, pp. 6101-6104. https://doi.org/10.1364/OL.43.006101
Choudhary S, Sampson R, Miyamoto Y, Magaña-Loaiza OS, Hashemi Rafsanjani SM, Mirhosseini M et al. Measurement of the radial mode spectrum of photons through a phase-retrieval method. Optics Letters. 2018 Dec 15;43(24):6101-6104. https://doi.org/10.1364/OL.43.006101
Choudhary, Saumya ; Sampson, Rachel ; Miyamoto, Yoko ; Magaña-Loaiza, Omar S. ; Hashemi Rafsanjani, Seyed Mohammad ; Mirhosseini, Mohammad ; Boyd, Robert W. / Measurement of the radial mode spectrum of photons through a phase-retrieval method. In: Optics Letters. 2018 ; Vol. 43, No. 24. pp. 6101-6104.
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