Asrar Asghar

6 Questions 5 Answers 0 Followers

Questions related from Asrar Asghar

How to calculate intrinsic carrier concentration in GaP for following data?

At the values for the electron effective mass= 0.22 and the hole effective mass = 0.79, the dielectric constant =11.1, and band gap energy=2.26 for GaP, calculate the intrinsic carrier...

07 May 2020 7,235 4 View

What will be the projection operator to distinguish +45 and -45 polarization of photon?

i am trying to understand how a projection operator will differentiate between +45 polarization and -45 polarization?like for 45 polarization I can write 1/Sqrt2[H+V] and for -45 1/Sqrt2[H-V] the...

15 October 2015 7,817 3 View

Is it necessary to have normalized density matrix after applying different operators?

after projecting, density matrix becomes un-normalized. do we have to normalize it? or its ok to continue with un-normalized density matrix?

10 September 2015 1,243 4 View

Is there any difference in crystal structure for parametric down conversion type 1 and type 2?

is it crystal structure or some thing else that make polarization of daughter photon orthogonal in type 2 and parallel in type 1?

17 May 2015 8,278 7 View

What is the difference between single mode and multimode photon?

what is the difference between two? does multimode photon means a wave packet which contains waves of electric field oscillating at different frequencies ? and single mode photons have one wave...

16 May 2015 2,981 5 View

How one photon from pump beam is converted in two photons in parametric down conversion in a non linear crystal?

I want to know what is the physical process that happens inside crystal.

14 May 2015 4,685 3 View