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Beam Expander Optimizer
Wavelength:
nm
Available lenses:
Thorlabs 1"
Thorlabs 2"
Custom (ex: "18.4;25.2;52.4")
First lens
mm
Second lens
mm
\(f_1\) range:
from
mm to
mm
\(f_2\) range:
from
mm to
mm
Max. beam diameter at first lens:
mm
Max. beam diameter at second lens:
mm
Input beam waist:
μm
mm
m
inch
Target beam waist:
μm
mm
m
inch
Mode-matching eff.
1
\(f_1\) (mm)
\(f_2\) (mm)
Output beam waist (
)
⌀ @ Lens 1 (mm)
⌀ @ Lens 2 (mm)
Notes:
Last update: 2025-04-09
1. Mode-matching efficiency
Mode-matching efficiency is calculated using equation 9 in
W. Joyce and B. DeLoach, "Alignment of Gaussian beams," Appl. Opt.
23
, 4187-4196 (1984).
, simplified to assume same waist position: $$\text{Power transmission} = \frac{4}{\left( \frac{w_1}{w_2} + \frac{w_2}{w_1}\right)^2}$$