Focus spot size calculator

Remark：

1. The focal spot diameter d can be roughly calculated by the following formula: d=2w₀ = (4M²λf)/(πD)
2. Where: f is the focal length of the focusing lens; λ is the wavelength of the incident light beam; D is the diameter of the incident light beam.
3. The focal spot diameter d is proportional to the focal length f of the focusing lens and the laser wavelength λ
4. The focal spot diameter d is inversely proportional to the diameter D of the incident light beam.

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Pulse Train Calculator

Remark：

This calculator calculates various useful properties of an optical pulse train. Input parameters include pulse duration, repetition rate, average power, and, optionally, spot diameter for intensity calculations. First, the calculator gives the duty cycle D, which is the product of the pulse duration T and the repetition rate f, and essentially tells you what proportion of time the optical power is "on."

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