Optical Nonlinearity:Phenomena, applications, and materials

Nie, W.

doi:10.1002/adma.19930050704

Cited by 255 publications

(107 citation statements)

References 210 publications

Supporting

Mentioning

102

Contrasting

Order By: Relevance

“…The calculated FOM of CBOB is 1.232 while d ij % d eff with a theoretical estimation. By the comparisons with the available experiment data of b-BBO and LBO crystals [16], it is found that the FOM of CBOB is larger than those of b-BBO and LBO crystals.…”

Section: Calculations Of Susceptibilitiesmentioning

confidence: 91%

“…In short, large frequency-doubling coefficients and figure of merit (FOM) are essentials for NLO material applications. They depend on the inherent nature of the material, in which the FOM value is proportional to the square of the SHG effective coefficient and inversely proportional to about cube of the refractive index ðFOM ¼ d 2 eff =n 2 o n 2o Þ [16]. Now, the understanding of the material structure characteristics relating with the NLO mechanisms has been considerably improved.…”

Section: Introductionmentioning

confidence: 98%

“…It has became the most popular for visible and UV applications since beta-barium borate (b-BBO) crystal was discovered [10,11]; the applications of lithium triborate (LBO) [12] mainly concentrated around SHG of near IR radiation and OPO (optical parametric oscillator) in visible and near IR ranges. Lithium niobate (LN) has very high value of effective second-order nonlinear coefficient along optical axis, and the periodically poled LN has become one of the most popular nonlinear materials since the 1990s [13,16]. Potassium titanyl phosphate (KTP) is a basic NLO crystal for the construction of compact visible solid-state laser systems applied to diodepumped Nd:laser [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural Designs and Property Characterizations for Second-Harmonic Generation Materials

Cheng

Lin

Zhang

et al. 2012

Structure-Property Relationships in Non-Linear Optical Crystals I

View full text Add to dashboard Cite

Second-harmonic generation (SHG) materials only exist in solids that have no inversion center space groups, and they are constructed by the building blocks or chromophores of noncentrosymmetricity (NCS). In this chapter, we employed one or multiple chromophores that result from the coordination structure distortions of a d 0 cation, polar displacement of d 10 cation center, a stereochemically active lone pair (SCALP) of cations, and asymmetrical delocalization p-charge systems, as building blocks to obtain some new compounds with NCS space group. The single-crystal structures were characterized, and physical properties, in particular SHG responses, were measured for these compounds. The electronic structures and density of states were calculated by DFT method, and the SHG properties are simulated to gain an insight into the relations between structure and NLO properties for the materials. The electronic origination of large SHG responses was assigned in terms of the calculated results.

show abstract

Section: Calculations Of Susceptibilitiesmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural Designs and Property Characterizations for Second-Harmonic Generation Materials

Cheng

Lin

Zhang

et al. 2012

Structure-Property Relationships in Non-Linear Optical Crystals I

View full text Add to dashboard Cite

show abstract

“…The structural flexibility of organic chromophores easily modifiable through precise chemical syntheses in view to increase the molecular hyperpolarizability b (ijk) and the possible grafting of chirality centers are remarkable assets compared to the difficulties of the engineering route of inorganic materials in which the requirements of noncentrosymmetry and high susceptibilities w (2) have to be accounted at crystal [3,4]. An essential condition to realize even-order NLO processes in materials is a noncentrosymmetric structure; however, optimal molecular orientations are required if appreciable effects are to be achieved in molecular materials [5,6]. Organic nonlinear chromophores of fast optical responses to the laser light have encouraged the research of highly efficient organic materials.…”

Section: Introductionmentioning

confidence: 99%

Studies on the growth and characterization of 2-aminopyridinium maleate—A novel nonlinear optical crystal

Babu¹,

Ramasamy²

2009

Journal of Crystal Growth

View full text Add to dashboard Cite

“…[ 26,27 ] Computer generated holography technique is utilized to design gold-fork microstructure with desired topological charge, which is then fabricated on gold coated quartz substrate using focus ion beam (FIB) technique. Both second and third harmonic generations of optical vortices are experimentally observed in the polymer thin fi lm/gold-fork/ quartz composite device.…”

mentioning

confidence: 99%

Third Harmonic Generation of Optical Vortices Using Holography‐Based Gold‐Fork Microstructure

Chen

Cai

et al. 2014

Advanced Optical Materials

View full text Add to dashboard Cite

down conversion have been used to study soliton propagation, quantum information processing, frequency multiplexing and so on. [ 3 ] Second harmonic generation (SHG) and high harmonic generation of optical vortex have been demonstrated using nonlinear optical crystal, [ 21,22,25 ] and gas medium [ 23,24 ] respectively. It has been shown that the OAM of the harmonic generation depends on the OAM of the pumping laser [21][22][23][24][25] or the phase dislocation of the medium. One of the breakthroughs in this area was made from direct fabricating phase dislocation of optical super lattice through electric fi eld polling in ferroelectric crystal; [ 25 ] the topological charge of the phase dislocation is then involved in the nonlinear optical processes.In this work, we propose to produce the harmonic generations of optical vortices by integrating holography based gold-fork microstructure into polymer thin fi lm with high thirdorder optical nonlinearity. [ 26,27 ] Computer generated holography technique is utilized to design gold-fork microstructure with desired topological charge, which is then fabricated on gold coated quartz substrate using focus ion beam (FIB) technique. Both second and third harmonic generations of optical vortices are experimentally observed in the polymer thin fi lm/gold-fork/ quartz composite device. Compared to the previous work using second-order nonlinear optical super lattice, [ 25,28 ] the integration of microstructured gold-fork into thin fi lm organic medium is very promising in miniaturization of phase dislocation devices, on-chip integration. Results and Discussions Device Confi gurationBased on the principle of hologram, fork diffraction grating has been widely used to generate or detect optical [29][30][31] and electron vortex beams, [ 32,33 ] and this technique becomes more attractive since the invention of spatial light modulators with which more complex vortex beams can be generated just by programming the liquid crystal pixels using computer. [ 34,35 ] In this work, we design a gold-fork microstructure with binary modulation, which is described by [ 36 ] where p = 2.4 µm is the period of a grating with line/space ratio of 1, l = 2 Light with orbital angular momentum has found novel applications in macro-manipulation, quantum optics, and optical communication, etc. The generation of orbital angular momentum in nonlinear media, such as second harmonic generation and high harmonic generation, is demonstrated using an optical superlattice and a gas medium. Here, by combining a gold-fork micro structure with a conjugated polymer thin fi lm with strong nonlinearity, both second-and third-order harmonic generation of vortex beams with orbital angular momentum are created. Compared to the previously reported medium to generate nonlinear optical vortex, this approach brings great advantages in device miniaturization and provides a promising strategy for realizing on-chip nonlinear optical vortex devices.

show abstract

Optical Nonlinearity:Phenomena, applications, and materials

Cited by 255 publications

References 210 publications

Structural Designs and Property Characterizations for Second-Harmonic Generation Materials

Structural Designs and Property Characterizations for Second-Harmonic Generation Materials

Studies on the growth and characterization of 2-aminopyridinium maleate—A novel nonlinear optical crystal

Third Harmonic Generation of Optical Vortices Using Holography‐Based Gold‐Fork Microstructure

Contact Info

Product

Resources

About