Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix

Poornesh, P.; Hegde, Pramod Kumar; Umesh, G.; Manjunatha, M. G.; Manjunatha, K.; Adhikari, Airody Vasudeva

doi:10.1016/j.optlastec.2009.06.018

Cited by 85 publications

(18 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, signature of optical nonlinearity can also be identied by this technique. Very recently, third-order nonlinear optical properties of conjugated polymer [23] and thiophene based conjugated polymer [24] have been investigated by two-photon-induced uorescence method and z-scan technique, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al [23] showed that the two-photon absorption cross-section of conjugate polymers varies inversely proportional to the concentration of the solvents but independently of polarity of the solvents, while Poornesh et al [24] pointed out that the origin of a large third--order optical nonlinearity lies in strong delocalization of π-electrons along the polymer chain. Li et al [25] investigated third-order nonlinear optical properties with dierent substituted azobenzene side chain using z-scan technique and found that push-pull electronic eect plays important role in enhancing the magnitude of χ …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Singh

Aghamkar

Lal³

2013

Acta Phys. Pol. A

View full text Add to dashboard Cite

Using chemical route a 2,3-butanedione dihydrazone (BDDH) compound was prepared. The third-order nonlinear optical properties of BDDH were investigated by using single beam z-scan technique with Q-switched, frequency doubled Nd:YAG laser (λ = 532 nm) at 5 ns pulse. Eect of excitation intensity on nonlinear optical properties has been studied and found that experimental and computed values are well in agreement. Also, we found the measured nonlinear optical coecients are nearly ten times larger than the reported. The excited state absorption cross-section of BDDH was found to be larger than that of the ground state absorption cross-section, indicating the reverse saturable absorption.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Singh

Aghamkar

Lal³

2013

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…By expanding the grating function into a 2-D Fourier series along x and z directions, as given by (12), (13), (14), and assuming effective grating length mm, the Fourier coefficients and corresponding harmonics can be found easily. For the harmonics that contain at least 4% of the power acquired at the fundamental components of the series, there exist four main components for z direction with spatial frequencies , where and coefficients , and .…”

Section: Resultsmentioning

confidence: 99%

“…where and are the integral coefficients related with the orthogonality of the propagating modes, and they are given by (20) where is defined in (14). Assuming , we find the parameter as where the detuning parameter is written in terms of the phase-matching parameter and self-coupling coefficients and as .…”

Section: B Mode Conversion Switching By Means Of Transient Gratingmentioning

confidence: 99%

See 1 more Smart Citation

An All-Optical Switching Based on Resonance Breaking With a Transient Grating

Akın

Dinleyici

2010

J. Lightwave Technol.

View full text Add to dashboard Cite

Abstract-A new resonance breaking in-fiber switch as an all-optical network component is investigated and presented. A transient grating is applied to break the transverse resonance of the fundamental waveguide mode and the power coupled into the higher order propagating mode is computed using coupled mode theory (CMT). The coupling of the modes with the grating forming beams in the evanescent region of the waveguide is investigated with four wave mixing (FWM). High conversion efficiency is calculated in the case of perfect phase matching at communication wavelength 1550 nm. The conversion efficiency of the proposed structure is considered in terms of third-order nonlinear susceptibility, and the effect of design and tuning parameters are investigated for grating forming geometry and laser beam intensity, respectively.

show abstract

Synthesis and characterization of diphenyl quinoline and bromine‐activated diphenyl quinoline organic phosphors

Pimpalshende

Dhoble

2013

Luminescence

View full text Add to dashboard Cite

A diphenyl quinoline (DPQ)-conjugated derivative and bromine-activated DPQ (Br-DPQ) were synthesized in an inert gas atmosphere at 140 °C using Friedlander condensation. The compounds showed blue emission under a UV source. The structures were characterized by X-ray diffraction and Fourier transform infrared spectroscopy. The photoluminescence properties of the compounds were analysed using excitation and emission spectra. The synthesized organic phosphors shows bright emission in the blue region, with peaks at 445 and 453 nm, respectively, for DPQ and Br-DPQ in the powder form. The physical and photoluminescence properties of these organic compounds reveal promising blue emitters for high-efficiency organic light-emitting diodes.

show abstract

Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix

Cited by 85 publications

References 33 publications

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

Third-Order Nonlinear Optical Properties and Reverse Saturable Absorption in 2,3-Butanedione Dihydrazone Using z-Scan Technique

An All-Optical Switching Based on Resonance Breaking With a Transient Grating

Synthesis and characterization of diphenyl quinoline and bromine‐activated diphenyl quinoline organic phosphors

Contact Info

Product

Resources

About