A comparative study of laser-induced surface damage thresholds in BBO crystals and effect of impurities

Bhar, G. C.; Chaudhary, A.K.; Kumbhakar, Pathik; Rudra, A.; Sabarwal, S.C.

doi:10.1016/j.optmat.2004.02.027

Cited by 15 publications

(5 citation statements)

References 6 publications

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“…Laser damage threshold values were found to be 0.1370, 0.0930, 0.0140, 0.4821, and 0.0232 GW cm −2 for COM‐1 to COM‐5 respectively. The laser damage threshold values of studied fluorophores were found to be higher than the reported value at 532 nm for β‐BBO crystals …”

Section: Resultscontrasting

confidence: 62%

Large Stokes Shifted Far‐Red to NIR‐Emitting D‐π‐A Coumarins: Combined Synthesis, Experimental, and Computational Investigation of Spectroscopic and Non‐Linear Optical Properties

et al. 2018

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Coumarin based push‐pull fluorophores (COM‐1 to COM‐5) bearing thiophene π‐spacer were synthesized having a donor at 7‐position and acceptor at 3‐position. Increasing the π‐conjugation length shifts their fluorescence maxima to the longer wavelength (600–756 nm). All fluorophores exhibit positive emission solvatochromism, fluorescence lifetime is in the range of 1.31 to 2.18 ns, and are high thermal stability. The nonlinear optical behavior was investigated by calculating the first/second‐order hyperpolarizability using a spectroscopic and computational method wherein, COM‐3 shows higher optical nonlinearity (μβCT=987 x 10−48 e.s.u and μβ0=9758 x 10−48 e.s.u.) in DMF. Third‐order nonlinear optical parameters measured using the Z‐scan method in each closed and open aperture curves. The fluorophores possess the self‐focusing effect and show negative nonlinear absorption coefficient (β) and positive nonlinear refractive index (n). Among all fluorophores, COM‐5 shows better real part of third‐order susceptibility χ(3) in DMSO (8.58 x 10−13 e.s.u.). Bond length alternation (BLA), natural bond orbital analysis (NBO), and generalized Mulliken‐Hush (GMH) analysis were studied to give theoretical evidence to the effective charge transfer (CT). Quadratic optical nonlinearity and Z‐scan results show that these coumarin‐based fluorophores can be considered as promising candidates for organic NLOphores in material for nonlinear optics.

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Section: Resultscontrasting

confidence: 62%

Large Stokes Shifted Far‐Red to NIR‐Emitting D‐π‐A Coumarins: Combined Synthesis, Experimental, and Computational Investigation of Spectroscopic and Non‐Linear Optical Properties

et al. 2018

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“…Laser damage threshold values for 5a , 5b and 5c were found to be 4.60, 4.37, and 3.37 GW cm −2 , respectively. The values of laser damage threshold for the dyes when compared to the reported value of the standard inorganic material, β ‐BBO crystals at same specification were found to be several times higher than.…”

Section: Resultsmentioning

confidence: 79%

NLOphoric Triphenylamine Derived Donor‐π‐Acceptor‐π‐Donor Based Colorants: Synthesis, Spectroscopic, Density Functional Theory and Z‐scan Studies

Raikwar

Mathew²,

Varghese³

et al. 2019

Photochem & Photobiology

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Three Donor-p-Acceptor-p-Donor type styryl dyes (5a-c) with different secondary donors are synthesized and characterized to study their nonlinear and linear optical properties. The structure-property relationships of the dyes are described in the light of systematic photophysical and theoretical investigations. The photophysical characteristics of 5a-c are influenced by the polarity of the medium, with an appreciable bathochromic shift in emission (5b = 81 nm) and large Stoke shifts (5b = 104-173 nm) in polar solvents. 5a-c showed intramolecular charge transfer characteristics recognized with the help of emission solvatochromism, solvent polarity graphs, natural bond orbital analysis and HOMO-LUMO energy difference. The optimized geometry and frontier molecular orbitals reveal that the electron donation takes place from secondary donors and not from a fixed donor (triphenylamine) which is more twisted. The nonlinear optical properties obtained using solvent induced spectral shift and computational methods are found within the limiting values. Z-scan results reveal saturable kind of behavior for 5a, 5b and 5c, whereas 5a and 5b show reverse saturable kind of behavior in acetone and ethanol and hence give optical limiting values. The two-photon absorption cross section described by two-level approximation is highest for 5b (251-300 GM).

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“…Laser damage threshold values were found to be 4.67 GW cm −2 for 2 c (radius, r=82.395 x 10 −6 m, Energy, E=4.975 mJ) and 4.19 GW cm −2 (Radius, r=84.455 x 10 −6 m, Energy, E=4.689 mJ) for 2 a . The LDT of the molecules studied are better than that of β‐BBO crystals, the reported standard inorganic reference material at the same specification …”

Section: Resultsmentioning

confidence: 99%

Extensive Study of Rhodanine‐Arylamine‐Based Chromophores: Consolidated Optical, DFT/TD‐DFT and Non‐Linear Optical Properties

et al. 2019

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Three push-pull rhodanine-arylamine based D-π-A dyes (2a-2c) are prepared to study the effect of donor on electronic, linear and nonlinear optical properties. The dyes, 2a,2b and 2c have a vinyl spacer conjugated with triphenylamine, julolidine, and carbazole donors respectively, with a methoxy group and rhodanine-3-acetic acid. The dyes exhibited solvent dependent absorption-emission up to the red region with large Stokes shifts (2a = 77-130 nm). This dyes possess charge transfer characteristics as established by transition dipole moment (μ eg ), dipole moment ratio (μ e /μ g ), Generalised Mulliken-Hush analysis, and electron distribution (DFT). The non-linear optical study revealed that quadratic hyperpolarizability (μβ CT ) are 1098.9 (2a), 515.0 (2b) and 339.6 x 10 -48 e.s.u. (2c) depending on donor strength. The intrinsic hyperpolarizabilities fall below b int 0 ¼ 10 À 3=2 limit i.e. less than unity. Solvatochromic two-level model is used to study the trends in two photon cross-section (σ2PA). Solvatochromic two-level model is used to study the trends in two photon absorption cross-section (σ2PA). The dye 2a exhibited high σ2PA, 216 GM (λ max 485 nm and 564 nm). The dyes 2a and 2c with analogue dye 3a show reverse saturable absorption (RSA) therefore, show positive third order nonlinear absorption coefficient, β and reasonable values of third order nonlinear susceptibility and high laser damage threshold. The Re χ (3) factors are responsible for the high values of χ (3) in the range of 0.77 to 8.09 x 10-12 e.s.u. Therefore, this material would serve as good candidate in the photonic application.

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A comparative study of laser-induced surface damage thresholds in BBO crystals and effect of impurities

Cited by 15 publications

References 6 publications

Large Stokes Shifted Far‐Red to NIR‐Emitting D‐π‐A Coumarins: Combined Synthesis, Experimental, and Computational Investigation of Spectroscopic and Non‐Linear Optical Properties

Large Stokes Shifted Far‐Red to NIR‐Emitting D‐π‐A Coumarins: Combined Synthesis, Experimental, and Computational Investigation of Spectroscopic and Non‐Linear Optical Properties

NLOphoric Triphenylamine Derived Donor‐π‐Acceptor‐π‐Donor Based Colorants: Synthesis, Spectroscopic, Density Functional Theory and Z‐scan Studies

Extensive Study of Rhodanine‐Arylamine‐Based Chromophores: Consolidated Optical, DFT/TD‐DFT and Non‐Linear Optical Properties

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