Parametric up-conversion from the infra-red

Warner, J.

doi:10.1007/bf01423512

Cited by 30 publications

(7 citation statements)

References 35 publications

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“…The generated wave vector K ¿ is along´Ã ½ ·Ã ¾ µ, and is the non-collinear angle between K ½ and K ¿ . Following the theory of Warner [4], the expression for « is given by the following relation:…”

Section: Tangential Phase-matchingmentioning

confidence: 99%

“…Whereas if the intersection of the wave vector surfaces of the input waves with that of the generated beam be tangential then it is called tangential phase matching [4,5] (illustrated in figure 1). Depending upon the direction of propagation of the interacting beams both the critical and tangential phase-matching technique may be collinear and non-collinear type.…”

Section: Tangential Phase-matchingmentioning

confidence: 99%

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Generation of ultraviolet radiation with wide angular tolerance in cesium lithium borate crystal

2000

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Tangential phase-matching has been realised in cesium lithium borate (CLBO) crystal for the first time for the generation of fourth harmonic (266 nm) of Nd:YAG and third harmonic (226.7 nm) of a dye laser radiation by second harmonic generation and sum-frequency mixing with the angular tolerance as large as 22 mrad and 21 mrad respectively, over one of the interacting beams. An energy conversion efficiency of 15% for fourth harmonic generation is obtained with a 5.5 mm thick crystal and with the average pump powers only 170 and 70 mW. A set of Sellmeier dispersion equations for the CLBO crystal have also been formulated.

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Section: Tangential Phase-matchingmentioning

confidence: 99%

Section: Tangential Phase-matchingmentioning

confidence: 99%

Generation of ultraviolet radiation with wide angular tolerance in cesium lithium borate crystal

2000

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“…Sum-frequency generation (SFG) using a second-order nonlinear crystal can be used to convert a mid-IR signal to the visible/near-infrared (NIR) region, enabling easy detection using silicon-based detectors. The upconversion technique was suggested as a viable alternative for mid-IR detection as early as the 1960s [9,10]. It is a particularly effective technique for low brightness signals, since it is inherently a low-noise conversion process.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared upconversion imaging using femtosecond pulses

Ashik¹,

O’Donnell²,

Kumar³

et al. 2019

Photon. Res.

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“…This review article mainly focuses on upconversion imaging. Although there are a few excellent reviews published in 1970's [55]- [59], the rapid progress in upconversion imaging in the 21 st century (Fig. 1) is seen as a motivating factor for considering an updated comprehensive review.…”

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confidence: 99%

Parametric upconversion imaging and its applications

Barh¹,

Rodrigo²,

Meng³

et al. 2019

Adv. Opt. Photon.

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This article provides an extensive survey of nonlinear parametric upconversion infrared (IR) imaging, starting from its origin to date. Upconversion imaging is a successful innovative technique for IR imaging in terms of sensitivity, speed, and noise performance. In this approach, the IR image is frequency upconverted to form a visible/near-IR image through parametric three-wave mixing followed by detection using a silicon-based detector or camera. In 1968 (50 years back), J. E. Midwinter first demonstrated upconversion imaging from shortwave-IR (1.6 μm) to visible (484 nm) wavelength using a bulk lithium niobate crystal. This technique quickly gained interest, and several other groups demonstrated upconversion imaging further into the mid-and far-IR with significantly improved quantum efficiency. Although a few excellent reviews on upconversion imaging were published in the early 1970's, the rapid progress in recent years merits an updated comprehensive review. The topic includes linear imaging, nonlinear optics, and laser science, and has shown diverse applications. The scope of this article is to provide an in-depth knowledge of upconversion imaging theory. An overview of different phase matching conditions for the parametric process and the sensitivity of the upconversion detection system are discussed. Furthermore, different design considerations and optimization schemes are outlined for application-specific upconversion imaging. The article comprises a historical perspective of the technique, its most recent technological advances, specific outstanding issues, and some cutting-edge applications of upconversion in IR imaging.

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Parametric up-conversion from the infra-red

Cited by 30 publications

References 35 publications

Generation of ultraviolet radiation with wide angular tolerance in cesium lithium borate crystal

Generation of ultraviolet radiation with wide angular tolerance in cesium lithium borate crystal

Mid-infrared upconversion imaging using femtosecond pulses

Parametric upconversion imaging and its applications

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