I have a vertically linear polarized laser according to specs. "Polarization ratio 100:1; Vertical linear polarization". However, When I place a polarizer in front of the laser its maximum is at 132 deg. and minimum is at 42deg. Thats 90 degrees apart.. Placing two polariazer infront of laser, having both polarizer vertically I have max. transmission. Placing one of them horizontally I have min transmission but.... Placing one at 132 and another at 42 we have min transmission and placing both at 132 we have max. polarization. I don't understand this. I compared it to another laser I know is vertically polarized.. and placing just one polarizer infront of the other laser this one has max transmission vertically for one polarizer. If the first laser is also vertically polarized shouldn't it has max. transmission the same, that is at 0 deg? At zero deg. on my polarizer I have the fast axis set vertically. What polarization does my laser have? How can they say its Vertical linear polarization if its not? Or am I do something wrong here?