Enhanced Third Order Nonlinearity in Macrocyclic Compounds

1992 ◽  
Vol 247 ◽  
Author(s):  
Masahiro Hosoda ◽  
Tatsuo Wada ◽  
Anthony F. Garito ◽  
Hiroyuki Sasabe
Keyword(s):  
Nonlinear Optical ◽  
Third Harmonic Generation ◽  
Ring Size ◽  
Central Metal ◽  
Macrocyclic Compounds ◽  
Metal Substitution ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
Molecular Stacking

ABSTRACTThe third-order nonlinear optical susceptibilities χ(3)1111(-3ω; ω, ω, ω) of macrocyclic compounds such as phthalocyanines and porphyrins are determined for the vacuum deposited and spin coated thin films by optical third-harmonic generation measurements at a wavelength of 1907 nm. The enhancements of the χ(3) values are discussed in terms of the central metal substitution, molecular stacking, extended ring size and number of χ-electrons. We firstly describe the results of extended porphyrin systems with 26 delocalized π-electrons.

scholarly journals Ultrafast Third-Order Nonlinear Optical Response Excited by fs Laser Pulses at 1550 nm in GaN Crystals

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3194
Author(s):  
Adrian Petris ◽  
Petronela Gheorghe ◽  
Tudor Braniste ◽  
Ion Tiginyanu
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Third Harmonic Generation ◽  
High Repetition Rate ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
High Repetition ◽  
Gan Crystal

The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can arise in the sample by cumulative thermal effects induced by high-repetition-rate laser pulses cannot be responsible for the third-harmonic generation, the ultrafast nonlinear optical effect of solely electronic origin is the only one involved in this process. The third-order nonlinear optical susceptibility of GaN crystal responsible for the third-harmonic generation process, an important indicative parameter for the potential use of this material in ultrafast photonic functionalities, is determined.

Third-order nonlinear optical properties of the Na2S–PbS–GeS2 sulfide glasses and the Na2S–PbO–GeS2 oxysulfide glasses

1999 ◽  
Vol 14 (2) ◽  
pp. 330-333 ◽  
Author(s):  
Zhong Hua Zhou ◽  
Hiroyuki Nasu ◽  
Tadanori Hashimoto ◽  
Kanichi Kamiya
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Third Harmonic Generation ◽  
Optical Nonlinearity ◽  
Chemical Durability ◽  
Number Density ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
Maximum Value

The third-order optical nonlinearity of glasses of the Na2S–PbS–GeS2 and Na2S–PbO–GeS2 systems was measured by third-harmonic generation method. The third-order nonlinearities of glasses of both systems increase with the increasing lead content. The maximum value of the third-order optical nonlinearity was 3.00 × 10-12 esu. The addition of PbO basically has little influence on third-order optical nonlinearity, and the largest nonlinearity is 1.49 × 10-12 esu. The minimum appearing at 15 mol% PbO can be explained by the decrease of number density of lead and sulfur. Chemical durability of oxysulfide glasses is superior to that of a pure sulfide system; thus the addition of PbO is important in this sense.

Nonlinear Optical Properties of Ladder Polymers and Their Model Compound

1990 ◽  
Vol 214 ◽  
Author(s):  
Samson A. Jenekhe ◽  
Michael Roberts ◽  
Ashwini K. Agrawal ◽  
Jeffrey S. Meth ◽  
Herman Vanherzeele
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Model Compound ◽  
Third Harmonic Generation ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
Ladder Polymers

ABSTRACTThe third order nonlinear optical properties of thin films of polybenzimidazobenzophenanthroline ladder (BBL) and semi–ladder (BBB) polymers and their model compound cis–BBB were investigated by picosecond, third harmonic generation. The χ(3) (−3ω, ω ω, ω) spectrum of BBL, BBB, and cis-BBB was obtained in the wavelength range 1.0–2.4µm and shown to exhibit a three–photon peak at respectively 1.695, 1.695, and 1.50 µm. The magnitude of the three–photon enhanced χ(3) was 6.40×10−11, 3.15×10−11, and 0.77×10−11 esu, respectively, for BBL, BBB, and cis–BBB. The results show that the χ(3) of BBL and BBB is enhanced by a factor of 50 and 17, respectively, relative to the model compound cis–BBB at 1.05µm.

Nonlinear Optical Properties of Two Thiophene-Based Polyconjugated Systems: Photoinduced Absorption and Third Harmonic Generation Spectroscopy

1989 ◽  
Vol 173 ◽  
Author(s):  
R. Zamboni ◽  
C. Taliani ◽  
G. Ruani ◽  
A. J. Pal ◽  
F. Kajzar
Keyword(s):  
Optical Properties ◽  
Conjugated Polymers ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Third Harmonic Generation ◽  
Nonlinear Optical Properties ◽  
Photoinduced Absorption ◽  
Third Harmonic ◽  
Optical Gap ◽  
The Third

ABSTRACTNonlinear optical properties of two thiophene-based conjugated polymers (PTT and PDTB) were studied by the photoinduced absorption spectroscopy and the third harmonic generation spectroscopy. The results obtained with these two methods are used to estimate the value of χ(3) in these materials. Resonant χ(3) are (2.0 ± 0.2) × 10−11 e.s.u. and (1.0 ± 0.1) × 10−11 e.s.u. for PTT and PDTB, respectively. χ(3) is shown to be related to the width of the optical gap through a sixth-power law. In PTT a vibronic structure due to the C = C stretching mode appears in the χ(3) spectrum.

Measurement of the third order susceptibility of -polyacetylene by third harmonic generation

1987 ◽  
Vol 61 (4) ◽  
pp. 221-225 ◽  
Author(s):  
M. Sinclair ◽  
D. Moses ◽  
A.J. Heeger ◽  
K. Vilhelmsson ◽  
B. Valk ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
Order Susceptibility

Determination of the third-order correlation function by noncollinear two-beam third-harmonic generation

1995 ◽  
Vol 25 (3) ◽  
pp. 262-266 ◽  
Author(s):  
Grigorii G Grigoryan ◽  
A O Melikyan ◽  
D G Sarkisyan ◽  
A S Sarkisyan
Keyword(s):  
Correlation Function ◽  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Third Order ◽  
Third Harmonic ◽  
The Third

Third-order nonlinear optical effects of silver nanoparticles and third harmonic generation from their plasma plumes

Optik ◽  
2021 ◽  
pp. 167680
Author(s):  
Srinivasa Rao Konda ◽  
Sandeep Kumar Maurya ◽  
Rashid A. Ganeev ◽  
Yu Hang Lai ◽  
Chunlei Guo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Third Harmonic Generation ◽  
Third Order ◽  
Third Harmonic ◽  
Optical Effects ◽  
Nonlinear Optical Effects ◽  
Plasma Plumes
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