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ICCD technology

ICCD technology

ICCD (Intensified CCD) is a CCD, which is optically connected to the image intensifier, which is mounted in front of the CCD.
Image intensifier has three functional elements: a photocathode, microchannel plate and phosphor screen. These three elements are mounted close to each other in the above mentioned order. Photons coming from a light source falling on the photocathode, creating photoelectrons. Photoelectrons are accelerate to the microchannel plate having electric voltage applying between the photocathode and the microchannel plate. Electrons are multiplied within the microchannel plate and then rapidly moving towards to the screen of phosphorus. Screen finally converts multiplied electrons back into photons, which are guided to CCD optics and lens.

Besides the extremely high sensitivity of ICCD camera, shutter functionality is one of the main advantages of the ICCD on EMCDDA cameras. That means that, if the voltage between the photocathode and microchannel plate is reversed, emitted photoelectrons is not moving quickly toward microchannel plate, but returning to the photocathode. Similarly, electrons are not multiplied and emitted on microchannel plate, which means that electrons will not go to the phosphorous screen, just as the image amplifier does not emit light on the CCD, which ultimately means that the shutter is closed. This process of reverse control voltage, is called gating, so these cameras is also called gatable CCD cameras.

As a representative of the world's manufacturer of scientific cameras for image processing, Kvark Ltd. offers solutions presented below. More about the camera manufacturer that can be used to record in the field of astronomy, spectroscopy, x-ray, confocal microscopic studies and the like, can be found on www.andor.com, or in option REPRESENTATIONS AND PROJECTS.
iStar Series (iStar CCD 312, iStar CCD 320, iStar CCD 334, iStar CCD 340)