Research on Cherenkov second-harmonic generation in periodically poled lithium niobate by femtosecond pulses

Deng, Xiaotie; Ren, Huaijin; Lao, Huiying; Chen, Xianfeng

doi:10.1364/josab.27.001475

Cited by 26 publications

(18 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An e-polarized spot and a pair of o-polarized Cherenkov spots located in the center and two sides on the screen, respectively. The angle between LCR spot and incident light is about 41.7°, it can be converted into internal angle 16.6°, which is in well agreement with the calculated internal Cherenkov angle 17° in PPLN.…”

Section: Resultssupporting

confidence: 85%

“…In previous study on NCR, domain walls as the ultrathin planar material in periodically poled ferroelectrics generate stronger NCR than single-domain area [14]. The mechanism of enhanced process in domain walls may be attributed to the new enhanced susceptibility tensor elements owing to the lattice distortion or the localized internal electrical field at domain walls [15,16]. In addition, some specific properties, such as conductive and photovoltaic characteristics also have been demonstrated on domain walls [15,17].…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Linear Cherenkov radiation in ferroelectric domain walls

et al. 2017

Self Cite

View full text Add to dashboard Cite

Nonlinear Cherenkov radiation plays an important role in detecting the internal structure of the ferroelectric crystal. However, linear Cherenkov radiation in the ferroelectric crystal was not observed before. Based on mirror symmetry reduction at the domain walls, we theoretically predicted that the linear Cherenkov radiation could be generated in periodically poled ferroelectric crystals according to the coupled wave equation. Then, we experimentally demonstrated the generation of such Cherenkov radiation in domain walls. Compared with the domain region, new nonzero elements χ, χ, χ and χ appear in the linear susceptibility tensor. The experimental results are consistent with our theoretical prediction.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 95%

Linear Cherenkov radiation in ferroelectric domain walls

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…This new class of random nonlinear photonic crystals offers a versatile way to realize frequency conversion processes over a wide spectral range [7][8][9]. Among the most interesting phase-matching schemes to achieve secondharmonic emission is the so-calledČerenkov-type phase matching which has been demonstrated in different bulk nonlinear media [10][11][12][13], waveguides [14] as well as in crystals with a periodic, quasi-periodic, and random modulation of the χ (2) nonlinearity [4,13,15,16]. It is a result of light-matter interaction satisfying only the longitudinal phase-matching condition [7].…”

Section: Introductionmentioning

confidence: 99%

Čerenkov-type second-harmonic spectroscopy in random nonlinear photonic structures

Ayoub¹,

Roedig²,

Koynov³

et al. 2013

Opt. Express

View full text Add to dashboard Cite

We report on experimental and theoretical studies of Čerenkov-type second-harmonic generation in random nonlinear photonic structures with different two-dimensional distributions of the ferroelectric domains. We utilize Čerenkov-type second-harmonic generation spectroscopy to estimate the average ferroelectric domain size by analyzing the spatial Fourier spectrum of the domain patterns. This is measured by scanning the Čerenkov second-harmonic signal for different angles of incidence and light polarizations of the fundamental wave. By comparing the experimental results with numerically simulated Fourier spectra, the corresponding domain patterns are retrieved, which are in a good correspondence with images obtained by Čerenkov-type second-harmonic generation microscopy.

show abstract

“…(2) describes the condition for Cerenkov nonlinear diffraction [15][16][17][18][19][20][21][22]. To satisfy this condition for a set of NRND orders, linearly chirped (gradually stepped) spatial modulation of the sign of nonlinear susceptibility can be applied.…”

Section: Theoretical Modelmentioning

confidence: 99%

Theory of second-harmonic generation in a chirped 2D nonlinear optical superlattice under nonlinear Raman-Nath diffraction

2015

View full text Add to dashboard Cite

We analyze second harmonic generation (SHG) in a two dimensional nonlinear optical superlattice (NLOS) with its modulation period being chirped in the propagation direction and constant in the transverse direction. This results in efficient multiple SHG via nonlinear Raman-Nath diffraction. We obtain exact analytical expressions for a SH amplitude generated in chirped 2D NLOSs and for its quasi-phasematching bandwidth. The results of analytical calculations are in excellent agreement with the numerical ones. We show that the process is robust to angular deviations of NLOS and it can be applied to enable tunable and broadband frequency conversion.

show abstract

Research on Cherenkov second-harmonic generation in periodically poled lithium niobate by femtosecond pulses

Cited by 26 publications

References 17 publications

Linear Cherenkov radiation in ferroelectric domain walls

Linear Cherenkov radiation in ferroelectric domain walls

Čerenkov-type second-harmonic spectroscopy in random nonlinear photonic structures

Theory of second-harmonic generation in a chirped 2D nonlinear optical superlattice under nonlinear Raman-Nath diffraction

Contact Info

Product

Resources

About