Photon intrinsic frequency and size in stringy photon model

Exploiting an open string which performs both rotational and pulsating motions, we investigate a photon intrinsic frequency. Explicitly evaluating the zero point fluctuation of is delineated in terms quantum mechanical ground state energy vibrational mode classical mode, find that frequency given by $\omega_{\gamma}=9.00\times 10^{23}~{\rm sec}^{-1}$ comparable to those baryons such as nucleon delta baryon. Next, calculate size $\langle r^{2}\rangle^{1/2}(\rm photon)=0.17~{\rm fm}$ phenomenological stringy model.