These spectrometers are designed to provide maximum light throughput in HELIOS and EOS spectrometers. They consist of an imaging spectrograph and a high speed multichannel detector. The spectrograph utilizes a high-efficiency, ion-etched, aberration corrected holographic grating. The spectrograph design is optimized for maximum light throughput. After an optical fiber, light travels directly to the grating. The grating simultaneously disperses and refocuses light onto the sensor without the use of any additional mirrors, lenses, etc. The height of the projected spectral image remains virtually the same as the diameter of the input optical fiber. This way the light spectrum can be focused on the sensor with minimal losses. The multichannel detectors have 0.5 mm tall pixels that are optimal for spectrometry.

Specifications	SPEC-NIR
Sensor Size	256 pixels
Sensor Type	InGaAs linear diode array
Pixel Size	50(H) x 500 (V) µm
Active area Length	12.5 mm
Maximum scan rate (scans/s)	7900
Sensor spectral response	800 to 1700 nm
Synchronization	Via external trigger or free-run
Dynamic Range*	>1000
Shortest integration time	20 µs
Digitization depth	14 bit

NIR Detector Spectral Response

NIR Grating Options

Grating #	Grooves/mm	Wavelength range (nm)	Blazing wavelength (nm)	Average dispersion (nm/mm)
6	97	800-1700	-	70.9