14 Questions 33 Answers 0 Followers
Questions related from Elena Renzhiglova
Can anyone please suggest some references? I would like to simulate scattering of a fundamental mode of a fiber by a microsphere. I am only familiar with a plane wave case, but in case of a curved...
02 January 2021 1,876 3 View
I want to look at the beam profile with a CMOS array. I focus the collimated beam with a long f lens and observe it near waist. I noticed that using stacks of ND filters distorts the observed...
26 December 2020 1,173 22 View
Hello, I hope there are others using this ray tracer. Here is my question. After FIELD PHASE command, is it possible to get local gradients of the phase in a given window? I thought they might be...
27 February 2020 4,633 1 View
Hello community, I will possibly need to simulate a cylindrical beam with ray optics. All optical surfaces are normal to optical axis, so it is going to be a simple astigmatic beam. While it is...
19 February 2020 8,738 2 View
Hello community, I would like to know the intervals for the RMS calculation. The more I go away from the pulse peak into the noise level, the smaller will be the resulting intervals. I have a...
28 August 2019 7,196 3 View
Hello community, I need a rubbery material which would not generate significant acoustic reflections when immersed in an aqueous medium. Speed of sound in PDMS is 1000 m/s, so there will be a...
05 March 2019 4,881 3 View
Hello community, I am trying to get a TEM00 output from FG025LJA fiber (Thorlabs). Its fundamental mode has a waist of 9.14 um. I am coupling a laser beam propagating in free space with a lens....
21 November 2018 4,037 6 View
I am attaching a picture of the beam on a IR card as well as the tapered end. This fiber, 50 um core 125 um cladding diameter, was tapered to 12-13 um cladding diameter, so core diameter became 5...
12 October 2016 6,462 4 View
It looks to me like people actually deposit aluminum not on the silicone crystal itself, but on top of the layer of quartz (SiO2) that grew on the wafer, which is the wafer's shiny side. Then...
05 October 2016 1,714 6 View
Hello. I have the following situation. Laser beam: D=5 mm diameter 1/e2, lambda=1064 nm, CW, TEM00. Fiber: NA 0.13-0.15, mode field diameter w=5.3-6.7 um In a technical note from Newport, I found...
14 September 2016 8,220 32 View
I am driving this diode \http://www.thorlabs.com/thorproduct.cfm?partnumber=DL5032-001 with 10 us long current pulses above its max CW current value, rep. rate 100 Hz. Up to 2.1 times the max...
21 December 2015 5,781 12 View
I am thinking of trying a LMP agarose, after adding a protein solution in PBS, and incubation at 4 degrees overnight. There is also polycaprolactone which seems to require quite some chemicals...
13 August 2015 4,694 4 View
Consider a single mode Gaussian beam entering a 0.75 NA objective. I made measurements of beam's FWHM around the focus. It looked like before the focus, the beam converges according to NA=0.75....
08 June 2015 9,536 1 View
Hello everyone, I would like some collective brainstorming on my setup. I have a laser providing a collimated, randomly polarized beam at 1064 nm and I run it at about 150 mW of power. I focus the...
01 January 1970 1,898 3 View
