Two-photon absorption and optical limiting in tristhiourea cadmium sulphate

Dhanuskodi, S.; Girisun, T.C. Sabari; Smijesh, N.; Philip, Reji

doi:10.1016/j.cplett.2009.12.069

Cited by 35 publications

(6 citation statements)

References 23 publications

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“…From the reported values (Refs. [21][22][23][24][25][26], the values of b are lower than our b values where as their reported I s are higher when compared with our values. The higher values of I s observed in the ZnO-GO hybrid system 26 which may be due to two photon absorption (TPA) with reverse saturable absorption and photo-induced photon transfer between ZnO and graphene sheets and direct comparison could not be made with other reported values.…”

Section: For Comparisoncontrasting

confidence: 86%

Preparation, optical and non-linear optical power limiting properties of Cu, CuNi nanowires

Udayabhaskar¹,

Ollakkan²,

Karthikeyan³

2014

Appl. Phys. Lett.

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Metallic nanowires show excellent Plasmon absorption which is tunable based on its aspect ratio and alloying nature. We prepared Cu and CuNi metallic nanowires and studied its optical and nonlinear optical behavior. Optical properties of nanowires are theoretically explained using Gans theory. Nonlinear optical behavior is studied using a single beam open aperture z-scan method with the use of 5 ns Nd: YAG laser. Optical limiting is found to arise from two-photon absorption.

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Section: For Comparisoncontrasting

confidence: 86%

Preparation, optical and non-linear optical power limiting properties of Cu, CuNi nanowires

Udayabhaskar¹,

Ollakkan²,

Karthikeyan³

2014

Appl. Phys. Lett.

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“…Thiourea-based metal complexes with structure type 8 (Chart ) have been also scrutinized for OL − and displayed appreciable performance, having limiting thresholds in the range of 5–15 J/cm 2 or nonlinear coefficients in the range of 10 –11 esu.…”

Section: Hybrid Organic–inorganic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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“…In the past 20 years, many approaches for optical limiting have been investigated. The most common designs have used two-photon absorption or absorption in nonlinear media as the limiting element. − However, many of the examined materials, such as carbon black, cadmium sulfates, graphene oxides, and silica with metal nanoparticles, have been primarily embodied in dilute liquid suspensions and suffer from turndown ratios below 10. Alternatively, some limiter designs with damage thresholds near their actuation threshold provide larger turndown ratios, albeit with the penalty of single-use protection.…”

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confidence: 99%

Optical Limiting Based on Huygens’ Metasurfaces

et al. 2020

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Optical limiting is desirable or necessary in a variety of applications that employ high-power light sources or sensitive photodetectors. However, the most prevalent methods compromise between on-state transmission and turndown ratio or rely on narrow transmission windows. We demonstrate that a metasurface-based architecture incorporating phase-change materials enables both high and broadband on-state transmission (−4.8 dB) while also providing a large turndown ratio (25.2 dB). Additionally, this design can be extended for broadband multiwavelength limiting due to the high off-resonance transmittance and readily scalable resonant wavelength. Furthermore, our choice of active material allows for protection in ultrafast laser environments due to the speed of the phase transition. These benefits offer a strong alternative to state-of-the-art optical limiters in technologies ranging from sensor protection to protective eyewear.

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Two-photon absorption and optical limiting in tristhiourea cadmium sulphate

Cited by 35 publications

References 23 publications

Preparation, optical and non-linear optical power limiting properties of Cu, CuNi nanowires

Preparation, optical and non-linear optical power limiting properties of Cu, CuNi nanowires

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Optical Limiting Based on Huygens’ Metasurfaces

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