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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt
Telefon: +49 6151 4259 78
Telefax: +49 6151 4259 88 
E- mail: info [at] topag.de 

ASP-IR - infrared

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ASP-IR - compact infrared spectrometer

ASP-IRH

The infrared spectrometer ASP-IR covers depending on the model a wide spectral range from 500-1700nm, 900-2600nm or 1200-3450nm. It is equipped with a InGaAs or cooled InAs photodiode as detector and fixed input slit and reaches a high resolution power using either free space or fiber input. Versions with detection range up to 3800nm are available on request.

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Bezeichnungen der Tabs

  • Description
  • Specifications
  • Pictures
Tab 1

Features

  • Broad IR spectral range
  • Small footprint
  • Resolution down to 0.5 nm
  • USB interface
  • Free-space and FC fiber input

Applications

  • Laser wavelength control
  • Laser emission analysis

The ASP-IR boasts a scanning mechanism that allows measurements in IR range without using an expensive CCD array. This makes the spectrometer very attractive in terms of price in the market of IR spectrometers. The ASP-IR has impressive characteristics that provide precise laser emission analysis along the whole registered range with resolution of down to 0.5 nm. The unit also features a trigger signal input for convenient pulsed laser measurement.

The spectrometer has a special fiber input, allowing measurement of either free-space or fiber signals without any realignment.

Tab 2
  ASP-IR-1.7 ASP-IR-2.6 ASP-IR-3.5
Spectral range, nm   500-1700 900-2600 1200-3450
 Grating, grooves/mm  600  400 400 
 Scanning speed, nm/s  up to 300  up to 400 up to 400 
Spectral resolution, nm 
(free-space)
0.5 0.8 1.2
Spectral resolution*, nm 
(given for 400 um fiber core)
0.7 1.0 1.5
Optical scheme Czerny-Turner
Input type(1) free-space and FC fiber socket 
(fiber patch-cord on request)

Focal length, mm
150
Input slit, um 15
Output slit, um 20
Relative aperture 1:13
Photodetector InGaAs photodiode InAs PV detector
Source pulse repetition rate, kHz any(2)
Detector active area height, mm  1 0.5 1
NEP [NEE]*(2...4), nW [pJ] 0.6 [0.15] 42 [2.5] 145 [7]
Relative dynamic range*(3) 3 [1.5] x105 7 [1] x105 6 [1.5] x104
ADC 16 bit, 65536 counts
PC connection USB
Dimensions (L x W x H), mm  225x136x81 295x136x81
Weight, kg   2.9 3.6

 

(1) – each spectrometer is equipped with a fiber socket and allows measurement of either free-space or fiber signals without any realignment
(2) – all spectrometers have two operational modes: CW (repetition rate from CW down to 6 kHz) and pulsed (up to 8 kHz for ASP-IR-1.7 and up to 25 kHz for ASP-IR-2.6 and ASP-IR-3.5); the pulsed mode has external trigger feature
(3) – dynamic range for pulsed mode given in brackets
(4) – NEP - noise equivalent power and NEE - noise equivalent energy are given at input beam diameter ~ 2 mm at peak sensitivity wavelength (ASP-IR-1.7 – 1.5 um, ASP-IR-2.6 – 2.3 um, ASP-IR-3.5 – 3.25 um)
* - typical values

Tab 3

Tab 3 Inhalt

Tab 4

Tab 4 Inhalt

Tab 5
Bild 1
ASP-IR Product 
Beschreibung 1
ASP-IR 
Bild 2
ASP-IR Dimensions 
Beschreibung 2
ASP-IR dimensions 
Bild 3
 
Beschreibung 3
 
Bild 4
 
Beschreibung 4
 
Bild 5
 
Beschreibung 5
 
Bild 6
 
Beschreibung 6
 
Bild 7
 
Beschreibung 7
 
Bild 8
 
Beschreibung 8
 
Bild 9
 
Beschreibung 9
 
Bild 10
 
Beschreibung 10
 
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