- As you said, I just calculated the waist position in the crystal because the speed of light changes in a medium and eventually the waist position also changes.
- Yes, I did. Once you get a beam with the right waist size, you just put your crystal at the waist position with the offset.
In fact you don't have to think about the rayleigh range inside of the crystal because what we care is the waist size and it doesn't change.
If I understand your elog, you are just calculating the the offset in position space that you get by having a refractive index.
Did you end up changing the mode matching so that the rayleigh range (which changes with refractive index) was confocally focused inside the crystal (e.g. Zr = 15 mm?
I thought we cared about satisfying the confocal focusing parameter, that is to say we want to set Zr = 2L_crystal. If Zr changes inside the crystal, this is the number we care about..isn't it NOT the waist size, but the rayleigh range we care about? I am not entirely sure what youre response is saying you did...
I guess the waist size would also let me know - are you using 69 um or 53 um waist size?