= Thermal noise=
- Mirror thermal noise
- Mirror substrate structure damping
mirrorcoa[f_, tm_, dcoa_, phicoa_, w1_, w2_, E0_] := 5.5*10(-19)*(dcoa/(15*10(-6)))(1/2)*(phicoa/(1.2*10(-2)))^(1/2)*
Sqrt[(10(-2)/w1)2*2 + (10(-2)/w2)2*2]*(tm/300)^(1/
2)*(7.24*1010/E0)(1/2)*(100/f)^(1/ 2);(*coating thermal noise.l:length of cavity[m],dcoa:thickness \
- Mirror substrate structure damping
of coating[m],phicoa:loss angle of coating,w1:beam radius of front \ mirror[m],w2:beam radius of end \ mirror[m],tm:temperature[K],E0:Young's modulus[N/m^2]*)