Preangka Roy

7 Questions 2 Answers 0 Followers

Questions related from Preangka Roy

How can we calculate the polygon scanner speed by changing the supply voltage?

I am using a polygon mirror scanner that have 6 facets and the dc brushless motor speed was given 10,000 RPM. Now I want to know how to calculate the polygon speed if I change the power supply...

12 July 2024 5,908 1 View

About measuring the resolution of equilateral prism?

Actually, for producing an optical comb with prism and etalon, the resolution of the prism must be less than the FSR of etalon. Could anyone help me how to calculate the resolution of a prism?

21 February 2024 9,096 0 View

How to collect the fluorescent beam of fiber core by collimating lens?

I have a double-clad fiber with NA of pumping core-0.29. Also, I have a collimating achromatic doublet lens with a focal length 7.5 mm and diameter of 5 mm. Is it possible to collect all of the...

16 January 2024 260 1 View

About converting the laser light intensity to db?

Can anyone tell me the equation to convert the laser beam intensity to db unit in origin software?

20 December 2023 3,571 5 View

About coupling the 1st order deflected beam of AOD into single mode fiber core?

I am using an Acousto optic deflector for scanning the laser beam. For producing a discrete light source, it is necessary to couple the 1st order diffracted beam from AOD into the single-mode...

09 November 2023 816 2 View

How can we couple the light beam into fiber cable through achromatic lens?

The NA of lens is 0.33, focal length is 7.5 mm and the NA of fiber core is 0.29. Then if we eject the light from dichroic mirror and then passed through the lens, then what will be the setup?...

01 March 2023 8,239 0 View

About double pass through the febry perot etalon

Could anyone analyze about double passing of the laser beam through the febry perot etalon? Does it have negative effect on tuning the beam?

01 January 1970 2,360 1 View