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Questions related to Optics
I need to design a multi layer structure( such as :substrate-layer 1-layer 2-component- heater) by Rsoft-BPM.I have gone through the tutorial in the BPM manual but couldn't design it completely ....
11 September 2022 1,208 0 View
Dear all, I am building and aligning mech Zehnder type f-2f interferometer for CEP signal detection. I have a few questions regarding this setup if someone could advise or comment? so, I have a...
10 August 2022 8,719 7 View
We are working on 3 D imaging in holography, need to develop new devices can add with CCD.
12 June 2022 236 2 View
Hi everyone, I am using CST Suite Studio for signal integrity analysis and I am wondering how to visualize the eyediagram in input and output. There are different eyediagram tasks but I do not...
10 March 2022 9,147 0 View
Hello all, I am trying to synthesize ZnO NPs from a plant extract, i tried many procedures and i didn't obtain them yet. My question is: do i have to calcinate the resultant precipitate in order...
28 February 2022 2,521 6 View
Nearly a year ago, I hit upon an idea with which I try to make an analogy between the Coriolis force (F=2mv×Ω,) and the Lorentz force (F=qv×B) due to an induced magnetic field. I see that these...
13 September 2021 8,026 2 View
There are many methods for the preparation of nanosuspension but among, all which method may be the suitable method for producing an optimum particle size and stability.
03 September 2021 6,776 4 View
Hello, I’m making some measurements sensitive to numerical aperture (NA), using Nikon 60X water immersion objective with NA 1, WD (working distance) 2.0. To verify the NA for my sources of light,...
14 July 2021 2,897 21 View
The correlation function for a two-level atom in contact with a reservoir of photons at temperature T is (I'm using natural units): C_R(\tau)\propto PolyGamma[4, 1-i (\tau/\beta)], where...
14 June 2021 8,788 2 View
I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...
01 March 2021 5,282 3 View
If The Laser head is parallel to the machine axis, the cosine error will be zero(θ=0). If the laser head tilted means the theta value will be some angle. My question is how to measure that...
26 February 2021 2,384 3 View
In remote sensing field, passive sensors are used to measure emitted radiation which is converted to temperature via the Placks Law of black body radiation. In natural conditions the reflected...
04 February 2021 4,448 2 View
When first order paraxial optics is expanded to third order optics (i.e. sin x~ x-x3/3! instead of sin x~x) , these 5 optical aberrations result in. What is the rigorous mathematical proof that,...
27 January 2021 8,998 4 View
Dear researchers It's well-known that the maximum light absorption of any structure can not be greater than 50%. Is it possible that the single-pass absorption exceeds 50%? How?
18 January 2021 2,666 7 View
Dear colleagues, We have observed large fluctuations in laser power in our setup and traced them down to fluctuations in laser beam polarisation. Attached is a schematic of the relevant part of...
15 January 2021 7,808 4 View
At the Monte Carlo casino, I saw an unusual advertising image. It rotated around a vertical axis and seemed suspended in the air; there was no screen behind it. The image was bright and colorful....
04 January 2021 9,346 5 View
Good day everyone currently I'm using Rsoft CAD as simulation tool for a Y-splitter, and I have a case when the launch field TE1 and the patway monitors the launch power, byeond the split point,...
29 December 2020 2,131 1 View
Hello everyone. For my experiment, I have a need of moving a ~20 mg optical element (prism) at frequencies of ~2 MHz with amplitudes of ~0.5 μm. I couldn't find any proper device which can fit...
08 November 2020 7,131 4 View
I am interested to know if in a materials which has no absorbance at a wavelength "L", but with strong Mie resonance at this wavelength "L" due to adequate surface structuring, where does the...
26 October 2020 7,712 5 View
Sorry for the naivety of my question. I am looking forward to estimating the maximum power capacity of an optical waveguide, typically, Silicon (Si) or Silicon Nitride (SiN) waveguide. Is there...
20 October 2020 5,163 5 View
Can any one give me clear information how to implement division in xilinx system generator when both numerator and denominator are signals which may be the case we encounter for example in input...
28 September 2020 5,508 0 View
I am using following laser for microscopy. https://www.picotronic.de/picopage/en/product/detail/id/672 Although it is already low power pointer laser I still need to reduce its intensity. I...
14 July 2020 4,920 18 View
I want to place 2 camera lenses (eg Thorlabs MVL12M23 and MVL50M1) inside the inner vacuum can of an Oxford Kelvinox MX250 dilution cryostat. The camera lenses will be thermally connected to the...
19 June 2020 6,246 1 View
Obviously, the spatial light modulator (SLM) and digital micromirror device (DMD) is diffration gratings. Therefore there would be multiple diffraction orders of the created images. Here I want...
07 May 2020 770 8 View