8.4.3. Units conversion

Created the 27/10/2022

@author: Sebastien Weber

pymodaq.utils.units.Ecmrel2Enm(Ecmrel, ref_wavelength=515)[source]

Converts energy from cm-1 relative to a ref wavelength to an energy in wavelength (nm)

Parameters

Ecmrel (float) – photon energy in cm-1
ref_wavelength (float) – reference wavelength in nm from which calculate the photon relative energy

Returns

photon energy in nm

Return type

float

Examples

>>> Ecmrel2Enm(500, 515)
528.6117526302285

pymodaq.utils.units.Enm2cmrel(E_nm, ref_wavelength=515)[source]

Converts energy in nm to cm-1 relative to a ref wavelength

Parameters

E_nm (float) – photon energy in wavelength (nm)
ref_wavelength (float) – reference wavelength in nm from which calculate the photon relative energy

Returns

photon energy in cm-1 relative to the ref wavelength

Return type

float

Examples

>>> Enm2cmrel(530, 515)
549.551199853453

pymodaq.utils.units.cm2nm(E_cm)[source]

Converts photon energy from absolute cm-1 to wavelength

Examples

>>> cm2nm(1e5)
100

pymodaq.utils.units.eV2cm(E_eV)[source]

Converts photon energy from electronvolt to absolute cm-1

Examples

>>> eV2cm(0.07)
564.5880342655984

pymodaq.utils.units.eV2nm(E_eV)[source]

Converts photon energy from electronvolt to wavelength in nm

Examples

>>> eV2nm(1.55)
799.898112990037

pymodaq.utils.units.l2w(x, speedlight=300)[source]

Converts photon energy in rad/fs to nm (and vice-versa)

Parameters

Return type

float

Examples

>>> l2w(800)
2.356194490192345
>>> l2w(800,3e8)
2356194.490192345

pymodaq.utils.units.nm2cm(E_nm)[source]

Converts photon energy from wavelength to absolute cm-1

Examples

>>> nm2cm(0.04)
0.000025

pymodaq.utils.units.nm2eV(E_nm)[source]

Converts photon energy from wavelength in nm to electronvolt

Examples

>>> nm2eV(800)
1.549802593918197