ASP-IR. Scanning IR Spectrometer
| 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 SMA905 fiber socket (FC socket or 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 cooled detector | |
| Source pulse repetition rate, kHz | any(2) | ||
| Detector active area height, mm | 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. |
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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.
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| Input wavelength range | 450-3200 nm |
| Pulse duration range | 10 fs - 30 ps |
| Minimum input frequency | from 10 Hz |
| Sensitivity | 100 mW^2 |
| Possible operating wavelength range | 200...2700 nm |
| Max. output rep. rate | up to 1 MHz |
| Rise time | down to 700 ps |
| Clear aperture | up to 20 mm |
| Contrast ratio | >1500:1 |
| Wavelength | 1050 / 525 / 800 nm |
| Average power | 1 W / 300 mW / 300 mW |
| Pulse duration | 200 / 200 / 100 fs |
| Repetition rate | 80 MHz |
| Jitter between channels | <1 fs |
| Wavelength | 400-1250 nm |
| Clear aperture | up to 20 mm |
| Peak isolation | up to 60 dB |
| Transmission | up to 92% |
| Damage threshold | up to 5 J/cm^2 |
| Average power | up to 20 W |
| Central wavelength | 1030 nm |
| Pulse energy | up to 2 mJ |
| Repetition rate | up to 1 MHz |
| Pulse duration | <270 fs |
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