Saturable absorption of silver nanoparticles in glass for femtosecond laser pulses at 400 nm

Ajami, Aliasghar; Husinsky, W.; Švecová, B.; Vytykáčová, Soňa; Nekvindová, Pavla

doi:10.1016/j.jnoncrysol.2015.06.027

Cited by 22 publications

(12 citation statements)

References 41 publications

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“…The coefficients are comparable to that of sodium borosilicate glasses doped with copper quantum dots (α 2 = 2.10 × 10 −11 m/W at 1550 nm) [21] and lower than that of silver-doped oxyfluoride glasses (α 2 ranges from 1.1 × 10 −9 m/W to 24.8 × 10 −9 m/W at the wavelengths from 445 nm to 660 nm of NPs sizes 3 nm and 17 nm) [39]. Furthermore, the I S values of present glasses are comparable with that of silver-doped oxyfluoride glasses (I S ranged from 5 × 10 9 W/m 2 to 7 × 10 10 W/m 2 at 480 nm for the particle sizes in the range of 2.4 nm and 2.8 nm) [8] and lower than that of silver NPs embedded commercially available BK7 glass (I S = 8.5 × 10 15 W/m 2 at 800 nm) [40] and also that of Cu + implanted fused silica (I S = 2.9 × 10 14 for 100 keV Cu + implanted sample, I S = 5 × 10 14 for 200 keV Cu + implanted sample, the measurements were performed at 532 nm) [41]. Moreover, the n 2 values obtained for present gold NP-doped titled glasses are two order of magnitude greater than that of CuO quantum dots embedded Na @ 850 nm Fig.…”

Section: Resultssupporting

confidence: 74%

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

et al. 2018

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Optical glasses possessing large third-order optical nonlinear susceptibility and fast response times are promising materials for the development of advanced nonlinear photonic devices. In this context, gold nanoparticle (NP)-doped borate glasses were synthesized via the melt-quench method. The nonlinear optical (NLO) properties of thus prepared glasses were investigated at different wavelengths (i.e., at 532 nm using nanosecond pulses, at 750 nm, 800 nm, and 850 nm wavelengths using femtosecond, MHz pulses). At 532 nm, open aperture (OA) Z-scan signatures of gold NP-doped borate glasses demonstrated reverse saturable absorption (RSA), attributed to mixed intra-band and interband transitions, while in the 750-850 nm region, the OA Z-scan data revealed the presence of saturable absorption (SA), possibly due to intra-band transitions. The NLO coefficients were evaluated at all the spectral regions and further compared with some of the recently reported glasses. The magnitudes of obtained NLO coefficients clearly demonstrate that the investigated glasses are potential materials for photonic device applications.

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Section: Resultssupporting

confidence: 74%

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

et al. 2018

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“…Several groups have shown the behavior of metal NPs upon interaction with intense laser pulses [14][15][16][17][18][19][20][21][22]. Their studies show that different mechanisms are responsible for their NLO properties, which include saturable absorption (SA), two-photon absorption (2PA), optical limiting (OL), and optical Kerr nonlinearities.…”

Section: Introductionmentioning

confidence: 99%

Effect of Size on the Saturable Absorption and Reverse Saturable Absorption in Silver Nanoparticle and Ultrafast Dynamics at 400 nm

Maurya

Rout

Ganeev

et al. 2019

Journal of Nanomaterials

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Saturable absorption and reverse saturable absorption play an important role in the studies of the nonlinear optical properties of nanoparticles at resonant excitation. With this viewpoint, nonlinear absorption processes of chemically prepared silver nanoparticles in deionized water were studied using femtosecond laser pulses at 400 nm. Our nonlinear absorption study shows that there is competition between saturable absorption and two-photon absorption in prepared Ag NPs which depends on the size of the nanoparticles. We have also studied the ultrafast dynamics associated with nanoparticles which also results in the direct correlation between the ultrafast timescale and the size of the nanoparticle. The excitation of Ag NPs at 400 nm has shown the manifestation of damped oscillation which is attributed to the radial breathing mode oscillation due to acoustic vibration.

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“…The SA caused by the ground state bleaching can lead to decrease of absorption in the sample. At the same time, the change of incident intensity of a probe laser pulse can also cause the variation of nonlinear optical properties, such as the shift from SA to reverse saturable absorption (RSA) [24,25]. As the incident intensity increases, the RSA leads to enhancement of nonlinear absorption in the sample.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Pulses of Different Duration with Chemically Prepared Silver Nanoparticles: Analysis of Optical Nonlinearities

Zhang

Ganeev

Konda

et al. 2019

Journal of Nanomaterials

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The nonlinear optical properties of the aqueous solutions of silver nanoparticles (Ag NPs) prepared by chemical reduction method are analyzed using femtosecond and picosecond pulses at different wavelengths. In the case of 800 and 400 nm, the growths of nonlinear absorption and nonlinear refraction with the increase of Ag NP concentration, as well as a change at the signs of nonlinear optical processes, are determined. The nonlinear absorption coefficient and nonlinear refractive index of Ag NP solutions measured using picosecond pulses were a few orders of magnitude larger than those in the case of femtosecond probe pulses. We also demonstrate the optical limiting properties of Ag NPs using 800 nm, 60 fs pulses.

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Saturable absorption of silver nanoparticles in glass for femtosecond laser pulses at 400 nm

Cited by 22 publications

References 41 publications

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

Nonlinear optical studies of sodium borate glasses embedded with gold nanoparticles

Effect of Size on the Saturable Absorption and Reverse Saturable Absorption in Silver Nanoparticle and Ultrafast Dynamics at 400 nm

Interaction of Pulses of Different Duration with Chemically Prepared Silver Nanoparticles: Analysis of Optical Nonlinearities

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