How can we measure tilt/inclination angle of collimated beam?

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How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

How can we differentiate between calcite, dolomite, siderite, magnesite and ankerite minerals in carbonatite rocks in thin section under op microscop?

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Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

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01 August 2024 8,368 2 View

Some new emerging problems on application of RL for scheduling in IoT networks?

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01 August 2024 8,754 2 View

What are the roles of both Monetry and Fiscal Policy coordination in optimising the Macroeconomic outcomes in the economy ?

These days policy coordination is becoming necesssary on different front. In India also it is the same case. Monetary and Fiscal policy interface is important in order to address the...

30 July 2024 2,104 6 View

Extraction of phaspholipid from soy lecithin?

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Is CFI / TLI = 1 okay in Mplus?

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How to make soil water characteristic curve using centrifuge?

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22 July 2024 3,488 2 View

What is the degassing temperature and time for biochar for BET surface area analysis if TGA is not possible?

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How to prepare alcohol foam with high alcohol content?

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15 July 2024 3,539 0 View

Can a Two-Lens System Improve Collimation of a Diode Laser for Scattering Experiments?

Hello Optics community, I'm currently setting up a scattering experiment using a Class 4 blue diode laser with a 10 CW power rating. The challenge is in achieving a tightly collimated beam around...

15 April 2024 986 0 View

What is the best way to couple light from integrating sphere into a multimode fibre?

I am setting up a test to measure power and spectrum of laser dies. To avoid precise alignment, and also due to lasers' high output power, I have decided to use an integrating sphere to do the...

31 March 2024 4,170 6 View

Can we be using a Iodine 123 scan as diagnostic and dosimetry scan as surrogate for Iodine 131?

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23 January 2024 9,104 4 View

What caused the swirl like laser spot?

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Bright/concentrated spot on the fluorescent microscopic image?

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13 July 2023 1,973 3 View

Collimating/focusing the output of an LED (light engine) into a 400um multimode optic fibre, what are the approaches?

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16 May 2023 2,080 2 View

Who can give a reference concerned the appearance of the components with spherical wavefront in flat cavity Raman laser ?

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02 April 2023 1,461 1 View

How to test laser intensity profile image is a Gaussian distribution ?

I am from Physics, background and doing some experiment using a laser source. Using a collimating lens, I have made the beam as a collimated beam. The intensity distribution of collimated beam is...

11 January 2023 7,347 11 View

Laser diode collimation with two lenses?

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17 December 2022 453 10 View

Does anyone familiar with the BER Tester from LUCEO Instruments?

Does anyone familiar with the BER Tester from LUCEO Instruments? How can I generate 10 Gbps NRZ-OOK data format for intensity modulation from Single Mode GRIN Fiber Collimator? Then, the laser...

08 November 2022 5,176 0 View

Tony Maine

Isn't it just the wavelength of the light divided by the diameter of the collimator, in radians? That is a very easy calculation.

Hamit Can

https://pdfs.semanticscholar.org/6355/999657d3dce491b5eab1e9fabf248c87ae6e.pdf

Article Direct determination of focal length by using Talbot interferometry