Abstract
An AOTF is a solid-state electro-optical device which acts as an electronically tunable spectral filter. The specific point of the device is that we can simultaneously obtain two diffracted beams perpendicularly polarized each other. So we developed an imaging spectro-polarimeter employing a visible (450-700nm) AOTF as well as a visible and up to near infrared (500-1, 000nm) AOTF. This paper first presents the concept, configuration, and performance of the instrument and, then the examples of experiments both in a laboratory and in the fields.
