Question: An electro-optic modulator is a device that switches a laser beam rapidly from off to on by switching the polarization direction through 90 when a

An electro-optic modulator is a device that switches a laser beam rapidly from off to on by switching the polarization direction through 90° when a voltage is applied. But a brownout results in only enough voltage for a 72° rotation. What fraction of the light is transmitted during the brownout when the beam is supposed to be fully on?

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