Investigating the Nonlinear Optical Response of Pepper Oil under Low Power Irradiation with Continuous Wave Visible Laser Beam

2020 ◽  
pp. 131-138
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Continuous Wave ◽  
Diffraction Integral ◽  
Visible Laser ◽  
Limiting Property ◽  
Kirchhoff Diffraction Integral ◽  
Theoretical Results ◽  
Good Agreement

The nonlinear optical properties of pepper oil are studied by diffraction ring patterns and Z-scan techniques with continuous wave beam from solid state laser at 473 nm wavelength. The nonlinear refractive index of the sample is calculated by both techniques. The sample show high nonlinear refractive index. Based on Fresnel-Kirchhoff diffraction integral, the far-field intensity distributions of ring patterns have been calculated. It is found that the experimental results are in good agreement with the theoretical results. Also the optical limiting property of pepper oil is reported. The results obtained in this study prove that the pepper oil has applications in nonlinear optical devices.

Thermal-induced nonlinearities in rose, linseed, and chamomile oils using continuous wave visible laser beam

2018 ◽  
Vol 96 (2) ◽  
pp. 157-164 ◽  
Author(s):  
H.A. Sultan ◽  
Qusay M.A. Hassan ◽  
H. Bakr ◽  
Ahmed S. Al-Asadi ◽  
D.H. Hashim ◽  
...  
Keyword(s):  
Laser Beam ◽  
Continuous Wave ◽  
Input Power ◽  
Diffraction Ring ◽  
Linear Absorption ◽  
Gaussian Profile ◽  
Diffraction Integral ◽  
Visible Laser ◽  
A Cell ◽  
Kirchhoff Diffraction Integral

Self-diffraction rings or spatial self-phase modulation were observed in rose, linseed, and chamomile oils under 473 nm continuous wave laser irradiation. The measurements were performed by propagating the laser beam through a cell containing each sample. The number of rings as well as diameter of the outer-most ring in each pattern obtained increases monotonically with increasing input power. The diffraction ring patterns are theoretically simulated using Fresnel–Kirchhoff diffraction integral in the case of an optically thin medium. The experimental and simulation results show that when a laser beam with Gaussian profile is transmitted through an oil medium, a series of circular diffraction rings forms in the intensity distribution pattern in the far-field. The nonlinear refractive index, n2, was determined from the number of observed rings and by the Z-scan technique. The results obtained from self-diffraction rings experiment and Z-scan are compared and analyzed for the three different oils. A large value was obtained of the order of n2 = 1.32 × l0−6 cm2/W for chamomile oil using the diffraction ring pattern technique. This large nonlinearity is attributed to a thermal effect resulting from linear absorption. Moreover, the optical limiting characteristics of rose, linseed, and chamomile oils were investigated.

scholarly journals Fused ring effect on optical nonlinearity and structure property relationship of anthracenyl chalcone based push-pull chromophores

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257808
Author(s):  
Dian Alwani Zainuri ◽  
Mundzir Abdullah ◽  
Muhamad Fikri Zaini ◽  
Hazri Bakhtiar ◽  
Suhana Arshad ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Electrostatic Potential ◽  
Nonlinear Refractive Index ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Continuous Wave ◽  
Excited State Absorption ◽  
Nonlinear Optical Properties ◽  
Closed Aperture

The Ultraviolet-visible (UV-Vis) spectra indicate that anthracenyl chalcones (ACs) have high maximum wavelengths and good transparency windows for optical applications and are suitable for optoelectronic applications owing to their HOMO–LUMO energy gaps (2.93 and 2.76 eV). Different donor substituents on the AC affect their dipole moments and nonlinear optical (NLO) responses. The positive, negative, and neutral electrostatic potential regions of the molecules were identified using molecular electrostatic potential (MEP). The stability of the molecule on account of hyperconjugative interactions and accompanying charge delocalization was analyzed using natural bond orbital (NBO) analysis. Open and closed aperture Z-scans were performed using a continuous-wave frequency-doubled diode-pumped solid-state (DPSS) laser to measure the nonlinear absorption and nonlinear refractive index coefficients, respectively. The valley-to-peak profile of AC indicated a negative nonlinear refractive index coefficient. The obtained single crystals possess reverse saturation absorption due to excited-state absorption. The structural and nonlinear optical properties of the molecules have been discussed, along with the role of anthracene substitution for enhancing the nonlinear optical properties. The calculated third-order susceptibility value was 1.10 x10-4 esu at an intensity of 4.1 kW/cm2, higher than the reported values for related chalcone derivatives. The NLO response for both ACs offers excellent potential in optical switching and limiting applications.

Nonlinear Optical Investigation of Biochemical Analytes in Blood Serum via Z-Scan Technique

2021 ◽  
Author(s):  
Samane Raji ◽  
Mohammad Ali Haddad ◽  
Seyed Mohammad Moshtaghioun ◽  
Zahra Dehghan
Keyword(s):  
Refractive Index ◽  
Blood Serum ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Diagnostic Procedures ◽  
Biological Tissues ◽  
Optical Characteristics ◽  
Closed Aperture ◽  
Optical Investigation ◽  
Medical Diagnoses

Background and Aims: Biomolecules' optical and nonlinear optical properties are widely used for different medical diagnoses and applications in biophotonic devices. These properties are essential in studying biological processes in living tissues. Aside from biomolecules' linear optical characteristics, their nonlinear optical characteristics have lately been considered. Materials and Methods: In this paper, the nonlinear optical responses of three biochemical analytes in blood serum, including glucose, triglycerides, and cholesterol are examined using the laser-based Z-Scan technique. Hence, different laboratory samples of blood serum with various concentrations of biochemical analytes are taken from patients for this purpose. Results: The normalized transmission curves were taken and analyzed in a closed aperture configuration of the Z-Scan technique and led to evaluating the nonlinear refractive index (n2) as an indicator of nonlinear responses of samples. The results show significant nonlinear optical behaviors of the samples under a strong electrical field of the laser, which leads to the measurement of the nonlinear refractive index (n2) of the samples with an error of less than ̴ 0.5 × 10-8 cm2/w. It is found that the values of nonlinear refractive index (n2) vary proportionally as a function of their concentration in blood serum. Conclusion: The findings of this study imply that the above sample's nonlinear optical response and, probable, those of other biological tissues might be used in medical diagnoses. In addition, the Z-Scan technique might be considered as a complementary method with other conventional diagnostic procedures due to its simplicity and quick experimental approach.

NON-LINEAR REFRACTIVE INDEX MEASUREMENT OF (2E)-3-[4-(DIMETHYLAMINO)PHENYL]-1-(2,5-DIMETHYLTHIOPHEN-3-YL)PROP-2-EN-1-ONE AND (2E)-3-(3,4-DIMETHOXYPHENYL)-1-(2,5-DIMETHYLTHIOPHEN-3-YL)PROP-2-EN-1-ONE

2011 ◽  
Vol 20 (02) ◽  
pp. 183-191 ◽  
Author(s):  
FRYAD Z. HENARI ◽  
ABDULLAH M. ASIRI
Keyword(s):  
Refractive Index ◽  
Absorption Coefficient ◽  
Nonlinear Absorption ◽  
Nonlinear Refractive Index ◽  
Continuous Wave ◽  
Nonlinear Effects ◽  
Optical Limiting ◽  
Nonlinear Absorption Coefficient ◽  
Refractive Index Measurement ◽  
Index Measurement

We report results from investigations of the nonlinear refractive index and nonlinear absorption coefficient of (2E)-3-[4-(Dimethylamino)phenyl]-1-(2,5-dimethylthiophen-3-yl)prop-2-en-1-one and (2E)-3-(3,4-Dimethoxyphenyl)-1-(2,5-dimethylthiophen-3-yl) prop-2-en-1-one using Z-scan technique with a continuous wave (cw) laser at wavelengths 488 nm and 514 nm. The nonlinear refractive index and nonlinear absorption coefficient of both samples were evaluated. The origin of the nonlinear effects was discussed. Optical limiting based on light induced nonlinear refractive index variation is demonstrated. The limiting thresholds were estimated for both samples. The results suggested that these materials offer promise as candidates for optical limiting and optical devices in the low power regime.

Continuous-wave measurement of the fiber nonlinear refractive index

1998 ◽  
Vol 23 (16) ◽  
pp. 1274 ◽  
Author(s):  
D. Monzón-Hernández ◽  
A. N. Starodumov ◽  
Yu. O. Barmenkov ◽  
I. Torres-Gómez ◽  
F. Mendoza-Santoyo
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Continuous Wave ◽  
Wave Measurement

scholarly journals Studying the Nonlinear Optical Properties of Fluoride Laser Host Materials in the Ultraviolet Wavelength Region

2021 ◽  
Vol 12 (1) ◽  
pp. 372
Author(s):  
Duong Van Pham ◽  
Diep Van Nguyen ◽  
Tu Xuan Nguyen ◽  
Kieu Anh Thi Doan ◽  
Quan Minh Le ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Ultrashort Pulse ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Wavelength Region ◽  
Aluminum Fluoride ◽  
Self Focusing ◽  
Host Materials ◽  
Ultraviolet Wavelength

Fluoride host materials doped with trivalent cerium ions have previously been demonstrated as successful laser materials in the ultraviolet wavelength region. However, the nonlinear optical properties of the fluoride hosts in this wavelength region have not been investigated yet, although nonlinearity could result in undesirable effects such as self-focusing and pulse distortion when these fluoride materials are used as gain media in high-power, ultrashort pulse laser oscillator and amplifier systems. In this work, the nonlinear refractive index of lithium calcium aluminum fluoride (LiCaAlF6), lithium strontium aluminum fluoride (LiSrAlF6), lanthanum fluoride (LaF3), and yttrium lithium fluoride (YLiF4) fluoride host materials are determined using the Kramers–Krönig relation model in the ultraviolet wavelength region. Self-focusing conditions, particularly at the peak laser emission wavelength of these materials, are further analyzed. Results show that LiCaAlF6 has the smallest nonlinear refractive index and self-focusing, making it an ideal host material under the conditions of ultrashort pulse and ultrahigh-power laser generation.

Third-order optical nonlinearity of DSR13/THF solutions under CW He–Ne laser irradiation using Z-scan method

2021 ◽  
pp. 1-7
Author(s):  
Bassam Abbas ◽  
Mohammad Alshikh Khalil
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Nonlinear Absorption ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Photon Absorption ◽  
Third Order ◽  
The Third ◽  
Order Susceptibility

The Z-scan technique was employed to explore the third-order nonlinear optical properties of disperse red 13 organic chromophore solutions in tetrahydrofuran. A continuous-wave He–Ne laser (632.8 nm) was used as a source of irradiation. The nonlinear absorption and nonlinear refractive index coefficients of this dye were investigated. The results showed that this dye has a good nonlinear response with its real and imaginary quantities of third-order susceptibility. The solutions showed negative nonlinear refraction. The best obtained value of the third-order susceptibility was 6.37 × 10–3 esu at a dye concentration of 3.15 × 10–4 mol/L. Moreover, the nonlinear optical properties were enhanced with higher dye concentrations, and an elevated trend in nonlinear absorption and nonlinear refractive index coefficients was observed. Also, it was found that the reverse saturable absorption was the main mechanism responsible for the two-photon absorption effect in DSR13/THF samples.

NONLINEAR OPTICAL PROPERTIES OF ACID ORANGE 10 DYE BY Z-SCAN TECHNIQUE USINGAr+LASER

2007 ◽  
Vol 16 (03) ◽  
pp. 359-366 ◽  
Author(s):  
AHMAD Y. NOORALDEEN ◽  
A. N. DHINAA ◽  
P. K. PALANISAMY
Keyword(s):  
Aqueous Solution ◽  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Nonlinear Optical ◽  
Closed Aperture ◽  
Limiting Behavior ◽  
Nlo Properties ◽  
Acid Orange ◽  
Potential Applications ◽  
Acid Orange 10

Nonlinear optical (NLO) properties of the aqueous solution of Acid Orange 10 dye have been studied using the closed aperture and open aperture Z-scan technique at different concentrations and various powers of Ar+laser at 488 nm wavelength. The nonlinear refractive index (n2) shows negative nonlinearity for all concentrations studied, and it is measured to be -13.5 × 10-9cm2/ W at 0.05 mM concentration. Moreover, the nonlinear refractive index is found to vary with intensity and concentration. The nonlinear absorption coefficient (β) is measured to be -3.8 × 10-4cm/W . Optical limiting behavior has been demonstrated for this dye. These results show that Acid Orange 10 dye has potential applications in nonlinear optics.

Single beam Z-scan for the calculation of nonlinear refractive index (n2) for poly(2,5-dimethylaniline)

2015 ◽  
Vol 24 (03) ◽  
pp. 1550039 ◽  
Author(s):  
M. K. Biswas ◽  
M. K. Amin ◽  
P. K. Das ◽  
E. Hoque ◽  
S. M. Sharafuddin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Experimental Work ◽  
Nonlinear Refractive Index ◽  
Continuous Wave ◽  
Laser Beams ◽  
Single Beam ◽  
Ion Laser

An experimental work has been done to measure the nonlinear refractive index of poly(2,5-dimethylaniline) (PDMA). In this work, a continuous wave (cw) Ar-ion laser has been used to calculate n2 for a novel polymer; poly(2,5-dimethylaniline): synthesized from 2,5 dimethylaniline. The single beam Z-scan technique was used with laser beams of 514 and 488 nm wavelengths, taking PDMA in methanol solvent at different concentrations. The order of n2 was found to be of the order of ~ 10-14 esu.

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