Mode-selective image upconversion

Santosh Kumar; He Zhang; Stephanie Maruca; Yu-Ping Huang

doi:10.1364/OL.44.000098

Optics Letters
Vol. 44,
Issue 1,
pp. 98-101
(2019)
•https://doi.org/10.1364/OL.44.000098

Mode-selective image upconversion

Santosh Kumar, He Zhang, Stephanie Maruca, and Yu-Ping Huang

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Santosh Kumar, He Zhang, Stephanie Maruca, and Yu-Ping Huang, "Mode-selective image upconversion," Opt. Lett. 44, 98-101 (2019)

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Table of Contents Category
- Nonlinear Optics
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About this Article
History
- Original Manuscript: October 11, 2018
- Revised Manuscript: November 10, 2018
- Manuscript Accepted: November 26, 2018
- Published: December 20, 2018

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Abstract

We study selective upconversion of optical signals according to their detailed transverse electromagnetic modes and demonstrate its proof of operation in a nonlinear crystal. The mode selectivity is achieved by preparing the pump wave in an optimized spatial profile to drive the upconversion. For signals in the Laguerre–Gaussian modes, we show that a mode can be converted with up to 60 times higher efficiency than an overlapping, but orthogonal, mode. This nonlinear optical approach may find applications in compressive imaging, pattern recognition, quantum communications, and others, where the existing linear optical methods are limited.

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(a)	$ξ$ (dB)		$ξ$ (dB)		$ξ$ (dB)
$P_{00}^{+}$	${LG}_{0}^{0}$	6.5	${LG}_{0}^{0}$	13.1	${LG}_{0}^{0}$	20.9
$P_{00}^{+}$	${LG}_{1}^{0}$	6.5	${LG}_{2}^{0}$	13.1	${LG}_{3}^{0}$	20.9
$P_{00}^{-}$	${LG}_{1}^{0}$	16.5	${LG}_{2}^{0}$	20.4	${LG}_{3}^{0}$	21.7
$P_{00}^{-}$	${LG}_{0}^{0}$	16.5	${LG}_{0}^{0}$	20.4	${LG}_{0}^{0}$	21.7
$P_{01}^{+}$	${LG}_{1}^{0}$	6.6	${LG}_{1}^{0}$	14.5	${LG}_{1}^{0}$	22.4
$P_{01}^{+}$	${LG}_{2}^{0}$	6.6	${LG}_{3}^{0}$	14.5	${LG}_{4}^{0}$	22.4
(b)	$ξ$ (dB)		$ξ$ (dB)		$ξ$ (dB)
$P_{00}^{+}$	${LG}_{0}^{0}$	5.9	${LG}_{0}^{0}$	12.1	${LG}_{0}^{0}$	18.1
$P_{00}^{+}$	${LG}_{1}^{0}$	5.9	${LG}_{2}^{0}$	12.1	${LG}_{3}^{0}$	18.1
$P_{00}^{-}$	${LG}_{1}^{0}$	11.8	${LG}_{2}^{0}$	14.8	${LG}_{3}^{0}$	15.6
$P_{00}^{-}$	${LG}_{0}^{0}$	11.8	${LG}_{0}^{0}$	14.8	${LG}_{0}^{0}$	15.6
$P_{01}^{+}$	${LG}_{1}^{0}$	5.6	${LG}_{1}^{0}$	11.5	${LG}_{1}^{0}$	15.2
$P_{01}^{+}$	${LG}_{2}^{0}$	5.6	${LG}_{3}^{0}$	11.5	${LG}_{4}^{0}$	15.2

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Optics Letters