Determine the theoretical refractive index and thickness of a single film layer deposited on germanium (n = 4.0) such that normal reflectance is zero at a wavelength of 2 µm. %3D What actual material could be used?

Q: 1. Calculate the number of allowed modes in a multimode optical fiber of radius a = 50- micrometer.…

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Q: A film suspended in air has a spectrally-averaged transmittance of 0.886 in a non- absorbing region.…

A: When light passes from one medium into another, it bends differently as a result of its refractive…

Q: Laser light with a wavelength of λ = 600 nm hits one side of a thin layer of material at a perfect…

A: Solution: Given: λ = wavelength of light in air = 600 nm θ = angle of incidence of laser light on…

Q: X rays of increasing wavelength are reflected from a crystal. Is there a threshold wavelength above…

A: X rays reflected form a crystal

Q: Question A9 A laser with 589 nm wavelength and a beam diameter of 2 mm is fed through a…

A: the text describes a scenario where a laser beam needs to be expanded to a certain diameter in order…

Q: _He:Ne laser operated in threshold condition. Reflection coefficients of the mirrors are: 0.999 and…

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Q: b. In optical fiber communication, why wavelengths ~ 1310 nm and 1550 nm are often preferred? c.…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If…

A: In this question let us suppose the angle between subtended gap of 2 blades is ϕ Angular velocity…

Q: In the figure, first-order reflection from the reflection planes shown occurs when an x-ray beam of…

A: Given values -  Wavelength = λ = 0.420 nm  Angle = θ = 61.9o Angle incidence on the reflection…

Q: Potassium chloride (KCL) crystal with a unit cell parameter of 6.3 A. The potassium and chlorine…

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Q: A spacer is cut from a playing card of thickness 2.88 × 10-4 m and used to separate one end of two…

A: Given that, Thickness is given by, t = 2.88 × 10^(–4) mLength of the glass plate is given by, l =…

Q: A step index fiber has the following parameters: Core diameter = 8 μm Cladding diameter = 125 μm…

A: Given, Core diameter, d= 8 μm Cladding diameter d1= 125 μm Core index, n1= 1.460 Cladding index,…

Q: X-rays of wavelength 0.200 nm are reflected from a certain crystal, and the first-order maximum…

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Q: Tungsten is a very high density, high melting point, and hard metal. These properties are partially…

A: Tungsten structure is BCC with mass ;m=183.3u Length of side of BCC=0.3155nm We have to find density…

Q: Material has a medium k ( absorption coefficient) and a particle size of about 0.4 microns. A…

A: Volume scattered component of reflectance will be high in this case because particle size is of…

Q: Consider a ruby crystal of diameter 1cm and length 10cm. The refractive index is 1.78. The ends have…

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Q: Question B1 The material rubidium antimony selenide, Rb3SbSe3, is known to have a cubic crystal…

A: Part 2: Explanation:a) Indexing the peaks and calculating the unit cell parameter:Step 1: Calculate…

Q: At an 850 nm wavelength, a step-index optical fibre with an 80 um core diameter has a relative…

A: Please see the next step for solution:-

Q: Interference by a double slit With: - red diode laser λred = (650 ± 20)nm and green λgreen = (532 ±…

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Q: The transmissivity T of a transparent material 20 mm thick to normally incident light is 0.85. If…

A: Index of refraction: n=1.4Transmissivity T=0.85, L=20 mmTransmissivity of other material, T'=0.75,…

Q: The concept of transmission of light used in optical fiber is O a. Dispersion O b. Total internal…

A: The concept of transmission of light used inoptical fiber is   T I R

Q: Calculate the R.I. of the antireflection film of minimum thickness 935 A.U. to be coated on solar…

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Q: calculate the Quality factor Q for a He-Ne laser that contain front mirror with 95% Reflexivity and…

A: To determine: The emission line of wavelength 632.8 nm

Q: ou are a sonographer, and you want to use the best available single-element transducer to image the…

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Q: 3. For a homogeneous dielectric medium with the refractive index of n(w), the corresponding…

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Q: 03/ Given a TEM00 beam of 2 = 514.5 nm from an Argon ion laser with a minimum beam waist of W. 2 um…

A: The wavelength given for the laser beam is as follows. λ=514.5 nm=514.5×10-9 m=5.145×10-7 m The…

Q: 10 mW of light is incident on a piece of GaAs which is 0.2mm thick. The incident light is a mixture…

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Q: How many complete tungsten atoms are there in each BCC unit cell?

A: The body centered cubic structure is a crystalline structure which have one atom at the center and…

Q: Borosilicate glass (BK7) has index of refraction of 1.5168 in the visible spectral region. Calculate…

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Q: and d-spacing formula: radius ratio identify the crys- stant of the element. he data of the Table 1.…

A: a) The sin2 θ values are shown as, serial number 2 θ θ sin θ sin2 θ 1    40.663 20.332 0.347…

Q: A silicone substrate is coated on one side with a thin film of ZnO to reduce reflection from the Si…

A: Given n = 1.850 n2 = 3.881 λ   = 600 nm  Find, the least coating thickness that eliminates the…

Q: 1. A helium-neon laser, radiating at 632.8 nm, has a power output of 3.0 mW. The beam diverges at…

A: Given, Wavelength,λ=632.8 nm=6.328×10-7m Power output,P=3 mW=3×10-3W Angle, θ=0.17 mrad=0.17×10-3rad…

Q: 37. A beam of X-rays with wavelength of 0.154 nm is directed to certain planes of a silicon crystal.…

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Q: Find the absorption coefficient for materials that transmit 75% from che incident laser on a 1 mm…

A: From the Lambert's law  I=I0e-αx where I is the intensity of transmitted light, I0 is the intensity…

Q: a single-slit experiment, light is passed through the slits, A, B, C which arevaried such that…

A: Solution:Here the narrow slit will have wide spreading of light.Thus, we get:slit, A=1.5 λslit,B = 2…

Q: 1)Tungsten (W) crystallizes in cubic structure. Side length of the unit cell of this crystal…

A: using 2dsinθ =λsinθ =λ2dnow for (110) plane, d = a2 =2.24A˙so sinθ =λ4.48A˙ ------(1)similarly for…

Q: Question A4 The mineral schreibersite is often found in iron-nickel meteorites. One sample was found…

A: Part 2: Explanation:Step 1: Determine the interplanar spacing (d) for the first diffraction peak.The…

Q: 5. A 17.0-mW (milli-Watts) laser puts out a narrow cylindrical beam 2.50 mm in diameter. What is the…

A: Given : P = 17 mW = 0.017 W d = 2.50 mm = 2.50 x 10-3 m