12 Questions 94 Answers 0 Followers
Questions related from Aleksandr A. Tarasov
Please recommend a simple and unexpensive UV-VIS spectrometer to measure small absorption in transparent optical crystals with aperture ~5x5 mm and length 50 mm. We need to measure absorption as...
14 February 2025 5,263 4 View
Recently I requested a full text of the paper and received it from one of the authors. How can I say THANKS ? The option "say thanks" allows to send message only to that people, who follow you at...
24 December 2024 1,681 0 View
I used during a long time the program SNLO (Qmix) using computers with Windows XP, 7 and 10. First time this program worked also under Windows 11. Now (probably after the last system update) Qmix...
10 July 2024 7,354 1 View
We see a divergent beam of multimode KGW Raman laser with flat cavity mirrors, which is focused at the distance ~1.8 F, where F is lens focal length. It means that the beam has spherical...
03 April 2023 1,494 1 View
If we operate with Raman laser well above threshold, for example, about 10 times, then the increase of laser efficiency due to double-pass pumping should be minimum in comparison with a...
11 November 2022 7,627 1 View
Frankly speaking, does threshold pump intensity in Raman laser reduces 2 times (neglecting with interference effects) in the case of double-pass pumping ?
08 November 2022 5,873 2 View
What is laser damage threshold of CVD diamond at 532 nm for nanosecond pulses for spot diameters > 1 mm ? Please indicate data with reference. I was able to find in Internet data only for 10.6...
11 May 2022 5,508 4 View
I want to know the absorption coefficient of Nd: YVO4 laser crystals with 1-3% Nd in visible spectral range (500-700 nm) with resolution better than 10 nm, in particular, at 532 nm.
22 November 2021 7,037 4 View
One can see many research papers, where so called low-birefringence fibers are used. In particular, they were used for observation of NLPR (nonlinear polarization rotation) or for mode-locking or...
27 July 2020 1,917 1 View
We produce generation of several harmonics (second, third, etc) of high power singlemode laser beam with beam propagation factor M2 ~ 1.25. What is M2 of harmonic beams ? Suppose acceptance angle...
12 July 2017 2,305 5 View
Laser damage threshold of glass SF11
28 June 2013 5,640 0 View
Let us consider collinear third harmonic generation of collimated monochromatic laser beam by cascade process: in the first nonlinear crystal we obtain second harmonic and then mix second...
02 November 2012 1,234 18 View
