set terminal postscript eps color enhanced font "Helvetica,16pt" size 8.6cm,6cm
set output "spectrum_arclaser.eps"

set key
# set tics scale 2
set xr [450:760]
set xl "Wavelength {/Symbol l} [nm]" offset 0,0.3
set xtics 50 
set yr [10000:12000000]
set yl "Intensity [photoevents s^{-1}]" offset 0,0
set log y 10
set format y "10^{%T}"

set label 1 "laser light" at 575,4500000 tc rgb 'blue' 
set arrow 1 from 570,4500000 to 520,4500000 filled lc rgb 'blue' front
set label 2 "blackbody radiation" at 530,225000 tc rgb 'blue'
set arrow 3 from 575,300000 to 620,500000 filled lc rgb 'blue' front

plot "spectrum_arclaser.txt" using 1:2 w l lw 2 lt 1 lc 1 notitle 
#"Simulated Laser Star"