Laser Wavelength Converter
Frequency, Energy & Electromagnetic Spectrum Analysis
4 Conversions
15+ Units
Wavelength Input
Conversion Results
Frequency
Frequency - Hz
Angular Frequency - rad/s
Energy
Photon Energy - eV
Energy (Joules) - J
Wave Properties
Wavenumber - cm⁻¹
Wave Vector - m⁻¹
Frequency Input
Conversion Results
Wavelength
Wavelength - nm
Period - s
Energy
Photon Energy - eV
Energy (Joules) - J
Wave Properties
Wavenumber - cm⁻¹
Wave Vector - m⁻¹
Energy Input
Conversion Results
Wavelength
Wavelength - nm
Frequency - Hz
Photon Properties
Momentum - kg⋅m/s
Mass Equivalent - kg
Wave Properties
Wavenumber - cm⁻¹
Wave Vector - m⁻¹
Wavenumber Input
Conversion Results
Wavelength
Wavelength - nm
Frequency - Hz
Energy
Photon Energy - eV
Energy (Joules) - J
Spectroscopy
Raman Shift - cm⁻¹
IR Absorption - cm⁻¹
Electromagnetic Spectrum Analysis
Identify the electromagnetic region and laser applications
Electromagnetic Region -
Laser Band -
Common Applications -
Conversion Formulas
Wavelength-Frequency
c = λ × f
f = c / λ
Where c = 2.998 × 10⁸ m/s (speed of light)
Photon Energy
E = h × f = hc / λ
E(eV) = 1239.84 / λ(nm)
Where h = 6.626 × 10⁻³⁴ J·s (Planck constant)
Wavenumber
k = 1 / λ = f / c
k(cm⁻¹) = 10⁷ / λ(nm)
Spectroscopic wavenumber in vacuum
Physical Constants
Speed of Light (c) 2.99792458 × 10⁸ m/s
Planck Constant (h) 6.62607015 × 10⁻³⁴ J·s
Reduced Planck (ℏ) 1.054571817 × 10⁻³⁴ J·s
Electron Volt 1.602176634 × 10⁻¹⁹ J
Laser Applications by Wavelength
Visible (400-700 nm)
- Laser displays and entertainment
- Spectroscopy and microscopy
- Medical photodynamic therapy
- Optical data storage
Near-IR (700-2500 nm)
- Industrial cutting and welding
- Fiber optic communications
- Medical surgery and treatment
- Material processing
Mid-IR (2.5-25 μm)
- Chemical sensing and analysis
- Environmental monitoring
- Medical diagnostics
- Defense and security