Linear and Nonlinear Optical Susceptibilities and Hyperpolarizability of Borate LiNaB4O7 Single Crystals: Theory and Experiment
Ali Hussain Reshak, Xuean Chen, S. Auluck and H. Kamarudin
Journal of Applied Physics 2012
Volume 112, Issue 5, Pages 053526 (1 – 11)
Since the successful demonstration of second harmonic generation by a propagation of a ruby laser beam via a quartz crystal by Franken et al,1 borate materials have been widely studied to employ in the potential applications such as nonlinear optics (NLO) and laser (mainly in visible and UV light) engineering.2, 3, 4, 5 Materials with NLO properties are useful for generating new frequency laser sources that cannot be directly produced from the common laser sources.2 Consequently, NLO materials have enabled a wider range of frequencies produced from the available laser. Borate materials have a few great properties, for example, short growth period, high damage threshold, large effective nonlinear coefficient and good mechanical properties.6 This suggests that borate materials are well fitted for the purpose of laser frequency conversion. BaB2O4, LiB3O5, CsB3O5 and YCa4(BO3)3O are examples of well-known borate-based NLO crystals.2 An early review on the comparison of the damage threshold and optical transmittance of these mentioned borate crystal compounds have been done by Becker in which the use of the favourable anionic group and birefringence in the borate materials are the essential features needed to produce
In order to observe quantum mechanical effects in a gas, we have to reduce the temperature drastically. Roughly, we can calculate this temperature by demanding that the thermal deBroglie wavelength has to become equal to the mean particle distance $\lambda\approx10\,\,\textrm{nm}$ $\Rightarrow T=\frac{\hbar^{2}}{3mk_{\text{B}}\left(10\,\,\textrm{nm}\right)^{2}}\approx0.002\,\,\textrm{K}$. % }, hence, as a matter of fact, the atomic BECs are the coldest objects existing in labs. BEC's creation became only possible after the development of appropriate experimental techniques needed to reach the necessary ultra-low temperatures. Mainly, we can divide the cooling procedure of atoms into main steps, \textbf{First}:- the method of laser cooling is applied to the gas loaded into a magneto-optical trap, this method was rewarded with the Nobel Prize in Physics for 1997 \cite{RevModPhys.70.685,RevModPhys.70.707,RevModPhys.70.721}, this method makes it possible to create a moderately cool state, at temperature $\sim100\,\,\mu\textrm{K}$. \textbf{Second}:- this step undergoes forced evaporative cooling, losing $\sim90\%$ of atoms, and the remaining atomic cloud spontaneously forms the
An incredibly rare `Blue Moon` diamond has gone on display in Rome`s Galleria di Adriano. One of only two such diamonds ever discovered, this unique specimen owes its luminous hue to trace amounts of the mineral boron, and is the only one acknowledged as `flawless`.
This essay will explicate a section of Beryl Satter’s book Family Properties. This section argues that the white population of Chicago took part in restrictive covenants or legally binding contracts that prevented the sale of properties to colored people in an effort to confine Chicago’s colored population to specific sections in the city. The purpose of this paper is to explicate a section of Family Properties through analysis of structure, tone, and imagery. It will then identify how the evidence relate to one another, and possibilities of meaning. Lastly this essay will conclude with summarizing my results and examining how using explication as a textual tool affects my approach to a reading.
The base of the light triangle, b, was measured first. Then, the light positions, a, were measured f=or the first order (m=1) and second order (m=2) light beams to determine the angle Ɵ for each. This data was organized in an Excel table and used to find the wavelength, λ, of the laser through Equation 1. This value was then compared to the theoretical value for wavelength of the laser, which was 6.328x〖10〗^(-7)m, and the percent error was calculated between the two.
This research allows the chemist to look at the bonds of molecules changing by using lasers to excite the molecule then pulsing or probing a weaker laser to watch the molecule change. It can be changed by altering the weaker lasers probe and pulse options then watching the wavelength of the probe pulse to see if the change is happening. This research is happening at California Institute of Technology where Zewail is a
Research and theories often have an undertone, if not blatantly describing the male offender. However, there is another gender, that also participates in criminal behavior. Although the violent female offender is not as prevalent as violent male offender, reason being women and men have different triggers that create the outward violent behavior. The violent behavior shown by male offenders some time is motivated by money, sexual desires, and possibly power. Women, however have other way of obtaining money or satisfying sexual desires that don’t include violent behavior and sometimes not even criminal behavior. Women by nature are nurturing and in general don’t pursue power in the way that the male offender does. Women typically commit violent
Lithium has the lowest energy of wavelength emitted. Sodium has a higher energy of wavelength emitted, and lithium has the highest. As one moves down the alkali metal family, the energy emitted increases because more shells are being added
Opportunity Big market No competition recently Develop new product for the category B. Problem Identification 1. Limited financial resources 2. 3. Limited recognition or understanding of product
Dependent on the wavelength of light, absorbance is the extent to which a sample can absorb a light. The acidic form of bromothymol blue will absorb light at a different wavelength compared to the basic form due to the varying colors of the solutions. By collecting the various absorbance levels of bromothymol blue, a spectrum can be created. A spectrum, a plot of absorbance versus wavelength, can tell what wavelengths is absorbed or transmitted by the solution. Using a spectrum, the wavelength at which absorbance is the greatest can be found, which not only gives information about the electronic structure of compound but also at this point, the absorbance is the highest and the rate of change of absorbance and wavelength will have the smallest difference. Using maximum wavelength also assists in the Beer Law equation, A_λ=ε_λ b C. Beer’s law is useful in this experiment because it proves that absorbance is directly proportional to the concentration of the solution of the
2. Miller, F.; Wilkins, C. Infrared Spectra and Characteristic Frequencies of Inorganic Ions. Ph.D. Dissertation, Mellon Institute, Pittsburgh, PA, 1952.
These crystals were first discovered back in 2004 by Subramanian Ramaswamy, who was studying at the University of Iowa in Iowa City. To learn
referenced. In the text of the sections above, indicate a reference by a superscript number.
*Clicks heels 3 times* There's no place like home. There's no place like home. There's no place like home. *Looks around* Toto I think we're back in Kansas. You probably recognize me, I'm Lyman Frank Baum's most known character of course!
Noblebright fantasy is fantasy with a thread of hope even in the darkest hour, with characters who strive to live.
Slip in bcc metals has a lot in common, although each material has its own subtleties [70]. Investigation of slip in Nb dates to over 60 years ago, when several researchers deformed single crystal Nb under different experimental conditions [80, 84, 89-91]. More attention has been put into Nb over the past few decades, as it became the material of choice to build SRF cavities. The following paragraphs will concentrate on slip in high purity Nb at room temperature, which is the condition of SRF cavity manufacturing.