Fast laser speckle suppression with an intracavity diffuser

Simon Mahler; Yaniv Eliezer; Hasan Yllmaz; Asher A. Friesem; Nir Davidson; Hui Cao; Hasan Yilmaz

doi:10.1515/nanoph-2020-0390

Fast laser speckle suppression with an intracavity diffuser

Simon Mahler, Yaniv Eliezer, Hasan Yllmaz, Asher A. Friesem, Nir Davidson, Hui Cao, Hasan Yilmaz

Department of Physics of Complex Systems

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination. Here, we introduce a method to accelerate the spatial decoherence of laser emission, achieving speckle suppression in the nanosecond integration time scale. The method relies on the insertion of an intracavity phase diffuser into a degenerate cavity laser to break the frequency degeneracy of transverse modes and broaden the lasing spectrum. The ultrafast decoherence of laser emission results in the reduction of speckle contrast to 3% in less than 1 ns.

Original language	English
Pages (from-to)	129-136
Number of pages	8
Journal	Nanophotonics
Volume	10
Issue number	1
Early online date	22 Sep 2020
DOIs	https://doi.org/10.1515/nanoph-2020-0390
State	Published - Jan 2021

Keywords

laser dynamics
optical coherence
optics and lasers
speckle

All Science Journal Classification (ASJC) codes

Biotechnology
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Fast laser speckle suppression with an intracavity diffuser",

abstract = "Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination. Here, we introduce a method to accelerate the spatial decoherence of laser emission, achieving speckle suppression in the nanosecond integration time scale. The method relies on the insertion of an intracavity phase diffuser into a degenerate cavity laser to break the frequency degeneracy of transverse modes and broaden the lasing spectrum. The ultrafast decoherence of laser emission results in the reduction of speckle contrast to 3\% in less than 1 ns. ",

keywords = "laser dynamics, optical coherence, optics and lasers, speckle",

author = "Simon Mahler and Yaniv Eliezer and Hasan Yllmaz and Friesem, \{Asher A.\} and Nir Davidson and Hui Cao and Hasan Yilmaz",

note = "Publisher Copyright: {\textcopyright} 2020 Simon Mahler et al., published by De Gruyter, Berlin/Boston 2020.",

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doi = "10.1515/nanoph-2020-0390",

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AU - Mahler, Simon

AU - Eliezer, Yaniv

AU - Yllmaz, Hasan

AU - Friesem, Asher A.

AU - Davidson, Nir

AU - Cao, Hui

AU - Yilmaz, Hasan

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N2 - Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination. Here, we introduce a method to accelerate the spatial decoherence of laser emission, achieving speckle suppression in the nanosecond integration time scale. The method relies on the insertion of an intracavity phase diffuser into a degenerate cavity laser to break the frequency degeneracy of transverse modes and broaden the lasing spectrum. The ultrafast decoherence of laser emission results in the reduction of speckle contrast to 3% in less than 1 ns.

AB - Fast speckle suppression is crucial for time-resolved full-field imaging with laser illumination. Here, we introduce a method to accelerate the spatial decoherence of laser emission, achieving speckle suppression in the nanosecond integration time scale. The method relies on the insertion of an intracavity phase diffuser into a degenerate cavity laser to break the frequency degeneracy of transverse modes and broaden the lasing spectrum. The ultrafast decoherence of laser emission results in the reduction of speckle contrast to 3% in less than 1 ns.

KW - laser dynamics

KW - optical coherence

KW - optics and lasers

KW - speckle

UR - http://www.scopus.com/inward/record.url?scp=85092722904&partnerID=8YFLogxK

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DO - 10.1515/nanoph-2020-0390

M3 - مقالة

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EP - 136

JO - Nanophotonics

JF - Nanophotonics

IS - 1

ER -

Fast laser speckle suppression with an intracavity diffuser

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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