Distortions in <i>Z</i>-scan spectroscopy

Yang, Qiguang; Seo, Jaetae; Creekmore, S.; Temple, D.; Mott, Andrew G.; Namkung, M.; Yoo, Ki‐Pung; Kim, Sun Young; Jung, Sung‐Soo

doi:10.1063/1.1535264

Cited by 32 publications

(12 citation statements)

References 4 publications

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“…This technique was proposed as an alternative method to Z-scan in cases where the samples present surface inhomogeneity, nonparallel faces, and low damage threshold. 17 Although the studied glasses present good optical quality and high damage threshold, they have large linear refractive indices. Thus, even a small angle between the glass surfaces could lead to a large deviation in the beam propagation direction, which would be a real problem in Z-scan measurements.…”

mentioning

confidence: 99%

Femtosecond nonlinear optical properties of tellurite glasses

Souza¹,

Alencar²,

Hickmann³

et al. 2006

Applied Physics Letters

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The third-order nonlinear optical properties of tellurite glasses with different compositions were investigated in the femtosecond regime at 810nm. Using the I-scan technique, positive nonlinear refractive indices of ∼10−15cm2∕W were measured. The authors also determined that nonlinear absorption was negligible for all studied samples. This result, added to their good chemical stability, indicates that tellurite glasses are promising materials for ultrafast photonic applications.

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confidence: 99%

Femtosecond nonlinear optical properties of tellurite glasses

Souza¹,

Alencar²,

Hickmann³

et al. 2006

Applied Physics Letters

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“…However, there are major disadvantages associated with this method. For example, the Z-scan curve will be distorted by the misalignment, linear scattering, sample imperfections, and intensity fluctuation during the measurement [3].…”

Section: Introductionmentioning

confidence: 99%

“…Popular experimental technique to estimate the third-order nonlinearities is Z-scan [3]. The Z-scan measurement is completed by detecting the transmittance of a nonlinear medium through a finite aperture in the far field as a function of the sample position (Z) measured with respect to the focal plane.…”

Section: Introductionmentioning

confidence: 99%

Third-Order Nonlinear Optical Study on Coumarin Derivative at 1064 nm Wavelength Excitation using Z-Scan Technique

Sharafudeen¹,

Vijayakumar²,

Adithya³

et al. 2011

AIP Conference Proceedings

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We have prepared the conjugated organic material named coumarin derivative (3-{(2E)-3-[4-(dimethylamino)phenyl]prop-2-enoyl}-2H-chromen-2-one) in dimethyl formamide (DMF), solution and investigated their nonlinear optical transmission by the open-aperture and closed aperture z-scan technique, using nanosecond laser pulses, at the excitation wavelength of 1064 nm. The nonlinear absorption coefficient, nonlinear refractive index, and third-order nonlinear susceptibility of the compounds are measured.

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“…Another scheme relies on the dipole interaction between the molecular wire and a tailored laser field [9,10,11,12,13]. A further approach employs gate voltages acting on the wire [14,15,16]. The latter allows a transistor-like control which has already been demonstrated experimentally [17,18,19].…”

Section: Introductionmentioning

confidence: 99%

Molecular wires acting as quantum heat ratchets

Zhan

Kohler

et al. 2009

Phys. Rev. E

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We explore heat transfer in molecular junctions between two leads in the absence of a finite net thermal bias. The application of an unbiased time-periodic temperature modulation of the leads entails a dynamical breaking of reflection symmetry, such that a directed heat current may emerge ͑ratchet effect͒. In particular, we consider two cases of adiabatically slow driving, namely, ͑i͒ periodic temperature modulation of only one lead and ͑ii͒ temperature modulation of both leads with an ac driving that contains a second harmonic, thus, generating harmonic mixing. Both scenarios yield sizable directed heat currents, which should be detectable with present techniques. Adding a static thermal bias allows one to compute the heat current-thermal load characteristics, which includes the ratchet effect of negative thermal bias with positive-valued heat flow against the thermal bias, up to the thermal stop load. The ratchet heat flow in turn generates also an electric current. An applied electric stop voltage, yielding effective zero electric current flow, then mimics a solely heat-ratchet-induced thermopower ͑"ratchet Seebeck effect"͒, although no net thermal bias is acting. Moreover, we find that the relative phase between the two harmonics in scenario ͑ii͒ enables steering the net heat current into a direction of choice.

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Distortions in Z-scan spectroscopy

Cited by 32 publications

References 4 publications

Femtosecond nonlinear optical properties of tellurite glasses

Femtosecond nonlinear optical properties of tellurite glasses

Third-Order Nonlinear Optical Study on Coumarin Derivative at 1064 nm Wavelength Excitation using Z-Scan Technique

Molecular wires acting as quantum heat ratchets

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