A photo diode array detector (PDA) is a linear array of discrete photo diodes on a single integrated circuit (IC) chip. For spectrophotometers, it is placed at the image plane from the grating to allow a range of wavelengths to be detected simultaneously.

In diode array spectrophotometers, the energy from the source is passed through the test specimen and then dispersed via a grating onto several hundred light-sensitive diodes, each of which in turn develops a signal proportional to the number of photons at its small wavelength interval; these signals then may be computed at rapid chosen ...

Sep 28, 2022 · Diode Array Spectrometer. An instrument with a single detector can monitor only one wavelength at a time. If we replace a single photomultiplier with an array of photodiodes, we can use the resulting detector to record a full spectrum in as little as 0.1 s.

Jul 1, 2008 · spectrophotometer offers the latest in diode-array technology: • Small footprint to save bench space • Prealigned deuterium and tungsten lamp light sources for trouble-free maintenance • Built-in buttons to measure sample, standard, and blank for convenient measurements even when wearing gloves • Thermally stable ceramic spectrograph

Diode Array Spectrometer. An instrument with a single detector can monitor only one wavelength at a time. If we replace a single photomultiplier with an array of photodiodes, we can use the resulting detector to record a full spectrum in as little as 0.1 s.

The Cary 8454 spectrophotometer uses a photodiode array (PDA) for simultaneous measurement of the complete ultra-violet to visible light spectrum in as little as 0.1 seconds.

The CCD array spectrometers used in lab can detect light from 200-1000 nm which includes the ultraviolet (UV), visible, and part of the near infrared (IR) regions of the electromagnetic spectrum. Hence, they can be used to quantitatively measure the amount of light at any wavelength in this

In this type of instrument all of the radiation from the light source passes through the sample and then is dispersed by a diffraction grating onto an array of photodiodes. Each photodiode detects the transmitted light intensity associated with a small band of wavelengths.

A diode array is an assembly of 1024 individual photodiodes in a linear array. The device is particularly useful for spectrophotometer applications where light, spread by a prism, is shone onto the array and the intensity of the wavelength spectrum measured simultaneously.

The Agilent 8453 Spectrophotometer is an essential component in UV-Visible systems. Routine and occasional users can take advantage of the diode-array features including fast scanning, excellent sensitivity, and virtually absolute wavelength reproducibility.