Transverse single-shot cross-correlation scheme for laser pulse temporal measurement via planar second harmonic generation

Wang, Bingxia; Cojocaru, C.; Królikowski, Wiesław; Sheng, Yan; Trull, J.

doi:10.1364/oe.24.022210

Cited by 15 publications

(9 citation statements)

References 23 publications

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“…[ 27–28 ] It should be pointed out, that such a scheme is quite distinct from transverse SHG inside random nonlinear crystals, where the phase matching is achieved due to reciprocal lattice vectors provided by the random nonlinear domain distributions. [ 29–31 ]…”

Section: Resultsmentioning

confidence: 99%

“…[27][28] It should be pointed out, that such a scheme is quite distinct from transverse SHG inside random nonlinear crystals, where the phase matching is achieved due to reciprocal lattice vectors provided by the random nonlinear domain distributions. [29][30][31] Unlike a conventional bulk auto-correlator, the counterpropagating pulses in T-FROG automatically coincide both spatially and temporally with spatial intensity profiles of SHG corresponding to the temporal auto-correlation. There is no temporal or spatial walk-off between the counter-propagating pulses, leaving the measurement free of group-velocity mismatch.…”

Section: Operation Principlementioning

confidence: 99%

See 1 more Smart Citation

Frequency‐Resolved Optical Gating in Transverse Geometry for On‐Chip Optical Pulse Diagnostics

Yu,

Lun,

Lin

et al. 2023

Laser & Photonics Reviews

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A new on‐chip diagnostic tool is developed, allowing for real‐time full characterization of waveguided ultrashort optical pulses. This technique, called transverse frequency‐resolved optical gating (T‐FROG), relies on second harmonic generation (SHG) in a transverse (surface emitting) geometry. The T‐FROG is implemented on a thin‐film lithium niobate (LN) platform, demonstrating its versatility and consistency in accurately characterizing waveguided femtosecond pulses, including information about chirp and self‐phase modulation. In contrast to traditional FROG techniques, T‐FROG represents a significant improvement as it provides temporal amplitude and phase profiles of ultrafast optical pulses directly inside photonic integrated circuits. The real‐time in situ characteristics and dynamics of optical pulses offered by T‐FROG show promise for their potential applications in the design, testing, and optimization of ultrafast photonic integrated circuits.

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Section: Resultsmentioning

confidence: 99%

Section: Operation Principlementioning

confidence: 99%

Frequency‐Resolved Optical Gating in Transverse Geometry for On‐Chip Optical Pulse Diagnostics

Yu,

Lun,

Lin

et al. 2023

Laser & Photonics Reviews

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“…phenomenon and also because of a number of important actual and potential applications in nonlinear optical microscopy [18,19], ultrashort pulse characterization [20], high harmonic generations [21], and functional materials analysis [22].…”

Section: Ferroelectrics and Their Applicationsmentioning

confidence: 99%

Nonlinear Optical Effects at Ferroelectric Domain Walls

Chen¹,

Królikowski²,

Sheng³

2018

Ferroelectrics and Their Applications

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Ferroelectric materials tend to form macroscopic domains of electric polarization. These domains have different orientations and coexist in the medium being separated by domain walls. In general, symmetry and structure of ferroelectric domain walls differ from their parent materials and consequently lead to abundant physical properties. In this book chapter, we review the nonlinear optical effects which are bundled with ferroelectric domain walls or whose properties can be significantly enhanced by the presence of domain walls. In particular, we have reviewed Google Scholar articles from 2008 to 2018 using the keywords "nonlinear Čerenkov radiation from ferroelectrics". We show that the spatially steep modulation of the second-order nonlinear optical coefficient across the domain wall leads to strong emission of the Čerenkov second harmonic in bulk materials. This feature also enables an effective nondestructive method for three-dimensional visualization and diagnostics of ferroelectric domain structures with very high resolution and high contrast.

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“…Any change in the domain pattern, which may be accomplished by either partial or total crystal poling, will be reflected in the transverse profile of the SH intensity. Planar SH generation in these crystals has been successfully used for different applications such as characterization of ultrashort optical pulses [13][14][15], cascaded THG [16], and nonlinear domain visualization [17].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of ferroelectric domain statistics via nonlinear diffraction in random nonlinear materials

Wang¹,

Switowski²,

Cojocaru³

et al. 2018

Opt. Express

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We present an indirect, non-destructive optical method for domain statistic characterization in disordered nonlinear crystals having homogeneous refractive index and spatially random distribution of ferroelectric domains. This method relies on the analysis of the wave-dependent spatial distribution of the second harmonic, in the plane perpendicular to the optical axis in combination with numerical simulations. We apply this technique to the characterization of two different media, Calcium Barium Niobate and Strontium Barium Niobate, with drastically different statistical distributions of ferroelectric domains.

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Transverse single-shot cross-correlation scheme for laser pulse temporal measurement via planar second harmonic generation

Cited by 15 publications

References 23 publications

Frequency‐Resolved Optical Gating in Transverse Geometry for On‐Chip Optical Pulse Diagnostics

Frequency‐Resolved Optical Gating in Transverse Geometry for On‐Chip Optical Pulse Diagnostics

Nonlinear Optical Effects at Ferroelectric Domain Walls

Comparative analysis of ferroelectric domain statistics via nonlinear diffraction in random nonlinear materials

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