Laser Doppler Vibrometer (how it works, advantages and disadvantages, speckle noise)

The video below shows very clearly how LDV works. Then, I explain (i) further how LDV works, (ii) LDV applications' advantages and disadvantages, and (iii) how speckle noise occur in LDV measurements. I use 8 publications for these explanations and refer you to these papers for more information.

Note: I am adding 3 papers to the end of this section. Even though the main goal of these papers was to examine the level of speckle noise, they provided information about the factors causing of the speckle noise occurrence as well. Therefore, they are nice compliments to the first 8 papers.