Coherent laser phase retrieval in the presence of measurement imperfections and incoherent light

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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Coherent laser phase retrieval in the presence of measurement imperfections and incoherent light. / Hansen, Anders Kragh.

In: Applied Optics, Vol. 56, No. 26, 10.09.2017, p. 7341-7345.

Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

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@article{14823e8d10de4e9a9fca2fd5a257a2b3,
title = "Coherent laser phase retrieval in the presence of measurement imperfections and incoherent light",
abstract = "Phase retrieval is a powerful numerical method that can be used to determine the wavefront of laser beams based only on intensity measurements, without the use of expensive, low-resolution specialized wavefront sensors such as Shack–Hartmann sensors. However, phase retrieval techniques generally suffer from poor convergence and fidelity when the input measurements contain electronic or optical noise and/or an incoherent intensity contribution overlapped with the otherwise spatially coherent laser beam. Here, we present an implementation of a modified version of the standard multiple-plane Gerchberg–Saxton algorithm and demonstrate that it is highly successful at extracting the intensity profile and wavefront of the spatially coherent part of the light from various lasers, including tapered laser diodes, at a very high fidelity despite the presence of incoherent light and noise.",
author = "Hansen, {Anders Kragh}",
year = "2017",
month = "9",
day = "10",
doi = "10.1364/AO.56.007341",
language = "English",
volume = "56",
pages = "7341--7345",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "Optical Society of America",
number = "26",

}

RIS

TY - JOUR

T1 - Coherent laser phase retrieval in the presence of measurement imperfections and incoherent light

AU - Hansen, Anders Kragh

PY - 2017/9/10

Y1 - 2017/9/10

N2 - Phase retrieval is a powerful numerical method that can be used to determine the wavefront of laser beams based only on intensity measurements, without the use of expensive, low-resolution specialized wavefront sensors such as Shack–Hartmann sensors. However, phase retrieval techniques generally suffer from poor convergence and fidelity when the input measurements contain electronic or optical noise and/or an incoherent intensity contribution overlapped with the otherwise spatially coherent laser beam. Here, we present an implementation of a modified version of the standard multiple-plane Gerchberg–Saxton algorithm and demonstrate that it is highly successful at extracting the intensity profile and wavefront of the spatially coherent part of the light from various lasers, including tapered laser diodes, at a very high fidelity despite the presence of incoherent light and noise.

AB - Phase retrieval is a powerful numerical method that can be used to determine the wavefront of laser beams based only on intensity measurements, without the use of expensive, low-resolution specialized wavefront sensors such as Shack–Hartmann sensors. However, phase retrieval techniques generally suffer from poor convergence and fidelity when the input measurements contain electronic or optical noise and/or an incoherent intensity contribution overlapped with the otherwise spatially coherent laser beam. Here, we present an implementation of a modified version of the standard multiple-plane Gerchberg–Saxton algorithm and demonstrate that it is highly successful at extracting the intensity profile and wavefront of the spatially coherent part of the light from various lasers, including tapered laser diodes, at a very high fidelity despite the presence of incoherent light and noise.

U2 - 10.1364/AO.56.007341

DO - 10.1364/AO.56.007341

M3 - Journal article

VL - 56

SP - 7341

EP - 7345

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 26

ER -