Photon Energy Converter
At 632.8 nm, a photon has about 1.959 eV. Convert vacuum wavelength, frequency, spectroscopic wavenumber and energy; optical power gives the photon rate.
1.9592952 eV; Visible
| Wavelength | 632.8 nm |
|---|---|
| Frequency | 4.7375546e+14 Hz |
| Wavenumber | 15802.781 cm-1 |
| Photon energy | 1.9592952 eV |
| Photon energy | 3.1391369e-19 J |
| Optical power | 1 W |
| Photons per second | 3.1855890e+18 s-1 |
| Photons per joule | 3.1855890e+18 J-1 |
| Momentum | 1.0471034e-27 kg m/s |
What Pro produces
Batch runs over a table of inputs, a PDF report with inputs, method and citations, CSV export and saved cases. Join the waiting list and we will write once, when it opens.
Use this in your AI assistant
This calculator is available to Claude, ChatGPT and other assistants through ScienceShot’s free connector.
https://scienceshot.com/mcpConnector tool: photon_energy
Example: What is the energy and photon rate of 1 W at 632.8 nm?
Common laser wavelengths
| Reference | Wavelength (nm) | Photon energy (eV) | Sources |
|---|---|---|---|
| He-Ne | 632.8 | 1.959295 | Thorlabs laser-line filters: He-Ne and Nd:YAG |
| Nd:YAG | 1,064 | 1.165265 | Thorlabs laser-line filters: He-Ne and Nd:YAG |
| Telecom 1310 | 1,310 | 0.9464443 | Thorlabs light sources: 1310 and 1550 nm |
| Telecom 1550 | 1,550 | 0.7998981 | Thorlabs light sources: 1310 and 1550 nm |
| ArF | 193 | 6.424052 | Coherent Excimer Laser EnergyMax: ArF 193 nm |
| CO2 | 10,600 | 0.1169662 | Coherent CO2 lasers: 10.6 um |
E = h c / lambda = h nu; p = h / lambda; N/s = P/E; N/J = 1/E. Wavenumber: 1/lambda (cm-1).
Cite this
ScienceShot. Photon energy converter. https://scienceshot.com/photon-energy-converter.
More formats
ScienceShot. (2026). Photon energy converter [Online calculator]. https://scienceshot.com/photon-energy-converter
@misc{scienceshot-photon-energy-converter-2026,
author = {{ScienceShot}},
title = {{Photon energy converter}},
year = {2026},
note = {Online calculator},
url = {https://scienceshot.com/photon-energy-converter}
}Sources: CODATA 2018 (NIST); ISO 21348:2007, Table 1 (review copy); Thorlabs laser-line filters: He-Ne and Nd:YAG; Thorlabs light sources: 1310 and 1550 nm; Coherent Excimer Laser EnergyMax: ArF 193 nm; Coherent CO2 lasers: 10.6 um.
Reviewed by a physicist with CERN experience