Evaluation of the third-order optical nonlinearity of Au:SiO2 nanocomposites in the off-resonant spectral region

Lee, Hwang Woon; Lee, Kwang-Jin; Cho, Sunghun; Anthony, John Kiran; Lee, Soonil; Lim, H.; Kim, Kihong; Pasiskevicius, Valdas; Rotermund, Fabıan

doi:10.1016/j.optcom.2012.09.009

Cited by 8 publications

(1 citation statement)

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“…To overcome this problem, we developed a nonlinear transmission measurement setup with the high resolution of about 0.1% to changes in transmission intensity, while the incident beam diameter is kept constant. This method has been successfully implemented to the characterization of nonlinear optical properties of nano-materials whose surface morphology were not sufficiently homogeneous 59 , and we also implemented this technique in our DNA thin solid films in order to enhance the measurement precision.…”

Section: Methodsmentioning

confidence: 99%

Ultrafast nonlinear optical properties of thin-solid DNA film and their application as a saturable absorber in femtosecond mode-locked fiber laser

Khazaeinezhad

Kassani

Paulson

et al. 2017

Sci Rep

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A new extraordinary application of deoxyribonucleic acid (DNA) thin-solid-film was experimentally explored in the field of ultrafast nonlinear photonics. Optical transmission was investigated in both linear and nonlinear regimes for two types of DNA thin-solid-films made from DNA in aqueous solution and DNA-cetyltrimethylammonium chloride (CTMA) in an organic solvent. Z-scan measurements revealed a high third-order nonlinearity with n2 exceeding 10−9 at a wavelength of 1570 nm, for a nonlinarity about five orders of magnitude larger than that of silica. We also demonstrated ultrafast saturable absorption (SA) with a modulation depth of 0.43%. DNA thin solid films were successfully deposited on a side-polished optical fiber, providing an efficient evanescent wave interaction. We built an organic-inorganic hybrid all-fiber ring laser using DNA film as an ultrafast SA and using Erbium-doped fiber as an efficient optical gain medium. Stable transform-limited femtosecond soliton pulses were generated with full width half maxima of 417 fs for DNA and 323 fs for DNA-CTMA thin-solid-film SAs. The average output power was 4.20 mW for DNA and 5.46 mW for DNA-CTMA. Detailed conditions for DNA solid film preparation, dispersion control in the laser cavity and subsequent characteristics of soliton pulses are discussed, to confirm unique nonlinear optical applications of DNA thin-solid-film.

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Section: Methodsmentioning

confidence: 99%