All-optical spatial phase modulation in films of dye-doped DNA biopolymer

Petriş, A.; Gheorghe, Petronela; Rău, Ileana; Manea‐Saghin, Ana‐Maria; Kajzar, F.

doi:10.1016/j.eurpolymj.2018.11.021

Cited by 7 publications

(10 citation statements)

References 28 publications

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“…Taking into consideration that the thickness d of the crystal polished with the plane parallel faces is constant, ΔΦ is proportional to the refractive index difference, Δ n . The phase information contained in the experimental fringe patterns is extracted using a method developed by us, − based on Fourier analysis, − for the direct spatial reconstruction of the optical phase (DSROP), , adapted to this particular experiment. Specific to the DSROP method, described in detail in, − is the fact that the phase information is extracted from a single fringe pattern.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The phase information contained in the experimental fringe patterns is extracted using a method developed by us, − based on Fourier analysis, − for the direct spatial reconstruction of the optical phase (DSROP), , adapted to this particular experiment. Specific to the DSROP method, described in detail in, − is the fact that the phase information is extracted from a single fringe pattern. The fringe patterns with and without the LGYSB:Nd_3 crystal sample in the test arm of the interferometer are shown in Figure a,b, respectively.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The transversal distribution of the crystal’s refractive index was derived from the phase distribution. The laboratory setup is based on the Mach–Zehnder interferometric configuration , adapted to this particular experiment. A He–Ne laser, with a wavelength of λ = 632.8 nm, was used as the light source.…”

Section: Experimental Sectionmentioning

confidence: 99%

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LGYSB:Nd─High-Performance Lasing in the Near-Infrared Region

Broasca,

Greculeasa,

Voicu

et al. 2024

J. Am. Chem. Soc.

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La w Nd x Gd y Y z Sc 4−w−x−y−z (BO 3 ) 4 (LGYSB:Nd) crystals with different Y concentrations (z = 0.15, 0.05, and 0.025) have been grown by the Czochralski method for the first time. The LGYSB:Nd-type crystals exhibit an acentric structure similar to that of the natural mineral huntite CaMg 3 (CO 3 ) 4 , with space group R32. The composition of the LGYSB:Nd_3 (z = 0.025) crystal grown f r o m t h e s t a r t i n g m e l t c o m p o s i t i o n La 0.628 Gd 0.547 Y 0.025 Nd 0.05 Sc 2.75 (BO 3 ) 4 was measured by inductively coupled plasma mass spectrometry method, and it was found to be La 0.6794 Gd 0.4105 Y 0.0178 Nd 0.0381 Sc 2.8542 (BO 3 ) 4 . The transversal spatial distribution of the refractive index in the LGYSB:Nd_3 crystal was investigated. Third-order nonlinear optical susceptibility χ (3) of the LGYSB:Nd_3 crystal was determined from third-harmonic generation experiments with ultrashort (fs) laser pulses. The optical transmission spectrum was measured in the range of 200−2000 nm. The absorption cross-section at 808 nm in σ-polarization was determined to be 1.18 × 10 −19 cm 2 for the LGYSB:Nd_3 crystal. The 10K absorption spectra revealed that the Nd 3+ ions occupy only La 3+ cationic sites in the LGYSB host matrix. The emission cross-section at 1064 nm in σ-polarization was determined to be σ em (σ) = 1.74 × 10 −19 cm 2 for the LGYSB:Nd_3 crystal. The fluorescence lifetime was found to be τ = 115 μs for all of the LGYSB:Nd crystals. The LGYSB:Nd_3 laser was operated at an emission wavelength of 1062 nm with very high slope efficiencies of η sa = 0.74 and η sa = 0.64 in quasi-cw and cw regimes, respectively.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

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LGYSB:Nd─High-Performance Lasing in the Near-Infrared Region

Broasca,

Greculeasa,

Voicu

et al. 2024

J. Am. Chem. Soc.

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“…One of the most important reasons why DNA appears to be exciting for OL functionality is the exceptional capability of DNA chains to interact with various dyes (nonbinding interactions, groove binding, and intercalation/semi-intercalation) [ 39 , 40 ] and the suitability of its properties. Its particular, double-stranded helical structure shows that it can be used as scaffolding for incorporating functional molecules, allowing the development of photonic, electronic, and opto-electronic devices [ 6 , 22 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. Moreover, there is a lot of free space to functionalize it with different dyes to obtain and tailor desired properties for targeted practical applications [ 4 , 5 , 22 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

“…Its particular, double-stranded helical structure shows that it can be used as scaffolding for incorporating functional molecules, allowing the development of photonic, electronic, and opto-electronic devices [ 6 , 22 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. Moreover, there is a lot of free space to functionalize it with different dyes to obtain and tailor desired properties for targeted practical applications [ 4 , 5 , 22 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. DNA can be used in fast photoinduced responses, improved nonlinear optical effects in DNA compounds [ 46 , 47 ], as well as in other future applications in nanotechnology [ 48 , 49 , 50 ].…”

Section: Introductionmentioning

confidence: 99%

Optical Limiting Properties of DNA Biopolymer Doped with Natural Dyes

Gheorghe,

Petris,

Anton

2023

Polymers

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The high-power lasers have important implications for present and future light-based technologies; therefore, the protection measures against their high-intensity radiation are extremely important. Currently, a great deal of interest is directed towards the development of new nonlinear optical materials for passive optical limiters, which are used to protect the human eye and sensitive optical and optoelectronic devices from laser-induced damage. Biopolymers doped with natural dyes are emerging as a new class of optical materials with interesting photosensitive properties. In this paper, the optical limiting capability of deoxyribonucleic acid bio-polymer functionalized with Turmeric natural dye has been demonstrated for the first time, to the best of our knowledge. The experimental investigation of the optical limit has been done by the Intensity-scan method in the NIR spectral domain at the important telecommunication wavelength of 1550 nm, using ultrashort laser pulses (~120 fs). Several optical properties of this natural dye are presented and discussed. The values of the optical transmittance in the linear regime, the saturation intensity of the nonlinear transmittance curves, and the coefficient of the nonlinear absorption have been determined. The influence of the DNA biopolymer and natural dye concentration on the optical limiting properties of the investigated biomaterials is reported and discussed. The photostability and thermal stability of the investigated solutions have also been evaluated by monitoring the temporal decay of the normalized absorption spectra under illumination with UVA light and heating, respectively. Our results evidence the positive influence of the DNA, which embeds Turmeric natural dye, on the optical limiting functionality itself and on the photostability and thermal stability of this novel material. The performed study reveals the potential of the investigated novel biomaterial for applications in nonlinear photonics, in particular in optical limiting.

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Overview of biopolymers

Sukumaran¹,

Gopi²

2021

Biopolymers and Their Industrial Applications

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All-optical spatial phase modulation in films of dye-doped DNA biopolymer

Cited by 7 publications

References 28 publications

LGYSB:Nd─High-Performance Lasing in the Near-Infrared Region

LGYSB:Nd─High-Performance Lasing in the Near-Infrared Region

Optical Limiting Properties of DNA Biopolymer Doped with Natural Dyes

Overview of biopolymers

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