Unit Convertions

eV    nm cm-1 fs
meV µm THz ps


Range Subrange Abbreviation eV nm cm-1 THz fs
Ultraviolet (UV) Extreme UV EUV 1240 – 12.4 1 – 100 1e7 – 1e5 3e5 – 3e3 0.00334 – 0.334
Vacuum UV VUV, UV-C 12.4 – 6.53 100 – 190 100000 – 52600 3000 – 1580 0.334 – 0.634
Deep UV DUV, UV-C 6.53 – 4.43 190 – 280 52600 – 35700 1580 – 1070 0.634 – 0.934
Mid UV UV-B 4.43 – 3.94 280 – 315 35700 – 31700 1070 – 952 0.934 – 1.05
Near UV UV-A 3.94 – 3.26 315 – 380 31700 – 26300 952 – 789 1.05 – 1.27
Visible (Vis) Violet   3.26 – 2.85 380 – 435 26300 – 23000 789 – 689 1.27 – 1.45
Blue   2.85 – 2.48 435 – 500 23000 – 20000 689 – 600 1.45 – 1.67
Cyan   2.48 – 2.38 500 – 520 20000 – 19200 600 – 577 1.67 – 1.73
Green   2.38 – 2.19 520 – 565 19200 – 17700 577 – 531 1.73 – 1.88
Yellow   2.19 – 2.10 565 – 590 17700 – 16900 531 – 508 1.88 – 1.97
Orange   2.10 – 1.98 590 – 625 16900 – 16000 508 – 480 1.97 – 2.08
Red   1.98 – 1.59 625 – 780 16000 – 12800 480 – 384 2.08 – 2.60
Infrared (IR) Near Infrared NIR, IR-A 1.58 – 0.886 780 – 1400 12800 – 7140 384 – 214 2.60 – 4.67
NIR, IR-B 0.886 – 0.413 1400 – 3000 7140 – 3330 214 – 100 4.67 – 10.0
Mid Infrared MIR, IR-C 413 – 24.8 meV 3 – 50 µm 3330 – 200 100 – 6.0 10 – 167
Far Infrared FIR, IR-C 24.8 – 1.24 meV 50 µm – 1 mm 200 – 10 6.0 – 0.3 167 – 3340
Terahertz (THz)     124 – 1.24 meV 10 µm – 1 mm 1000 – 10 30 – 0.3 33.4 – 3340




Relevant Formulas:
E = hc/λ
ν = c/λ
ṽ = 1/λ
T = 1/ν
Definitions:
E = energy (eV)
λ = wavelength (m)
ṽ = wavenumber (m-1)
T = period (s)
ν = frequency (s-1 or Hz)
h = Planck’s constant = 4.135667516 x 10-15 eV*s
c = speed of light = 299792458 m/s

Original page

http://halas.rice.edu/conversions