Two Photon Absorption Calculator
Use our free twophoton absorption calculator tool to quickly get the number of twophoton excitations per molecule for a given laser source. For using this calculator, simply give the inputs in the input fields and click on the calculate button. So that you will get an answer instantly.
What is Two Photon Absorption?
Twophoton absorption is a process where an atom or molecule absorbs two photons simultaneously. The energy of two photons can be identical or different. This absorption results in the excitation of the atom or molecule from one energy state to a higher energy state.
Look into the formula for twophoton absorption is,
N=21*δ*ϕ2*τ
where:
 ϕ – Photon flux at the center of a Gaussian beam.
 τ– Exposure time.
 δ – Twophoton absorption
How to Calculate TwoPhoton Absorption?
Here are the steps to calculate the twophoton absorption that are given below.
 Firstly, note down all the values that were given in the problem.
 Next, apply the formula, N=21*δ*ϕ2*τ.
 After that, substitute the values and simplify them.
 Finally, you will get the value of twophoton absorption.
FAQs on Two Photon Absorption Calculator
1. What is twophoton absorption mean?
Photon absorption is a process in which an atomic electron absorbs the energy of an incident photon.
2. How to use this twophoton absorption calculator?
All you need to do is give the inputs in the input fields and click on the calculate button that gives you instant answers.
3. What are the applications of twophoton absorption?
Here are the two applications that are given below.

The study of materials and investigate the relationship between their electronic and molecular structure and optical properties.

Performing highresolution imaging of live cell and tissue samples.