Optical investigations of photonics lithium niobate

In this work, the structure properties of nano Lead sulfide PbS thin films are studied. Thin samples were prepared by pulse laser deposition and deposited on glass substrates at wavelength 1064nm wavelength with a various laser energies (200,300,400,500)nm. The study of atomic force microscope (AFM) and X-ray diffraction as well as the effect of changing the laser energy on the structural properties has been studied. It has been observed that the membrane formed is of the polycrystalline type and the predominant phase is the plane (111) and (200). The minimum grain size obtained was 16.5 nm at a laser energy about 200 mJ. The results showed that thin films of average granular sizes (75 nm) could be prepared.As for the optical properties, the effect of changing the laser energy on them was studied, and it was found that they have direct allowed transitions in the range of (1.55 to 2.45) eV

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“…The reflectivity (R) was obtained using the equation [14]: R= 1-T-A (5) Fig.6 shows the change of reflectivity as a function of wavelength.…”

Section: Reflectancementioning

confidence: 99%

Pulsed laser deposition to investigate structural and optical properties of lead sulfide nanostructure

Mohammed

Abbas

Aadim

2020

IJP

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“…This is reflected throughout the absorbance spectra findings. The refractive index, which is a measure of spectral dispersion and the extinction coefficient, is calculated according to Equations ( 2) and ( 3), respectively [9,30]:…”

Section: Resultsmentioning

confidence: 99%

In-Depth Optical Analysis of Zn(Al)O Mixed Metal Oxide Film-Based Zn/Al-Layered Double Hydroxide for TCO Application

Salih¹,

Ramizy

Aldaghri

et al. 2022

Crystals

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In this article, an in-depth optical investigation of Zn(Al)O-mixed metal oxide (MMO) film using Zn/Al-layered double hydroxide (LDH) was elucidated through co-precipitation and spin coating techniques. The field emission scanning electron microscopy (FE-SEM) analysis revealed the occurrence of a vertically aligned sheet-like structure with a thickness of 60 nm for pristine LDH, which further reduced to 45 nm after calcination at 300 °C. Additionally, pristine LDH showed multiple optical bandgaps of 5.18, 3.6, and 3.2 eV. Moreover, a good agreement of the obtained optical bandgaps was attained between both utilized methods, ultraviolet-visible light (UV-Vis), and photoluminescence (PL) spectroscopies. The optical bandgap decreased at higher calcination temperatures, which indicates the active role of the applied post-fabrication process on the optical profile of the deposited MMO film/s. The demonstrated transmittance spectra of the deposited MMO films exhibited a transparency between 85% and 95%; this indicates the usefulness and consistency of the proposed film for transparent conductive oxide (TCO) based optoelectronic applications.

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“…Triethyl phosphite [54] Lithium niobate Dihydrate lithium acetate and niobium chloride [55] Lithium niobate Lithium carbonate and niobium pentoxide [56] Alumina Aluminum nitrate [57] Alumina Aluminum nitrate [58] Metal salts can also be used. They are dissolved in an aqueous medium, allowing dissociation of the ions [59].…”

Section: Hydroxyapatitementioning

confidence: 99%

“…Lithium carbonate and niobium pentoxide [56] Alumina Aluminum nitrate [57] Alumina Aluminum nitrate [58] Metal salts can also be used. They are dissolved in an aqueous medium, allowing dissociation of the ions [59].…”

Section: Lithium Niobatementioning

confidence: 99%

Sol–Gel Ceramics for SEIRAS and SERS Substrates

Garibay-Alvarado

Reyes-López

2021

Crystals

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Surface Enhanced Infrared Absorption Spectroscopy and Surface Enhanced Raman Spectroscopy are analytic techniques that have not been massively adopted since there are issues that still need to be solved with regard to the nature of the signal enhancement substrates used. The sol–gel method for the obtention of ceramics provides an alternative for the production of said substrates. Ceramics are very wear- and heat-resistant, properties that can be used for their regeneration, and through the sol–gel method, ceramics can be produced with high purity as well as can be fashioned in many ways through different techniques, which can be helpful in the pursuit of reproducibility. This paper discusses the different advantages of sol–gel ceramics, their use in the electrospinning technique, and their application in infrared and Raman surface-enhanced spectroscopy.

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Optical investigations of photonics lithium niobate

Cited by 54 publications

References 56 publications

Pulsed laser deposition to investigate structural and optical properties of lead sulfide nanostructure

Pulsed laser deposition to investigate structural and optical properties of lead sulfide nanostructure

In-Depth Optical Analysis of Zn(Al)O Mixed Metal Oxide Film-Based Zn/Al-Layered Double Hydroxide for TCO Application

Sol–Gel Ceramics for SEIRAS and SERS Substrates

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