The fastest and most reliable method to measure the wavelength of pulsed and CW lasers.
Bristol Instruments’ wavelength meters are for scientists and engineers who need to know the exact wavelength of their lasers. These systems use proven interferometer-based technology to measure absolute wavelength to an accuracy as high as ± 0.0001 nm. To achieve the reliable accuracy that is expected from Bristol Instruments, all of its wavelength meters include a built-in wavelength standard for continuous calibration. Systems are available for CW and pulsed lasers that operate at wavelengths from 350 nm to 12 µm.
Pulsed and CW lasers, 350 – 1700 nm, 1 kHz measurement rate
The 871 Series Pulsed Laser Wavelength Meter provides accurate wavelength information for researchers who need to know the exact wavelength of their CW or pulsed lasers. A unique Fizeau interferometer-based design measures absolute wavelength to an accuracy of ± 1 part per million. This design also enables a sustained measurement rate as high as 1 kHz, the fastest available.
Accurate wavelength measurement of pulsed and CW lasers
The 871 Pulsed Laser Wavelength Meter measures the absolute wavelength of pulsed and CW lasers to an accuracy of ± 1 part per million (± 300 MHz at 1000 nm). This performance is maintained over long periods of time because the system is automatically calibrated with a built-in wavelength standard. The calibration process takes less than two seconds, and can be set to activate automatically at a chosen time interval, or based on the system’s internal thermal conditions.
Fastest wavelength measurement available
The 871 Pulsed Laser Wavelength Meter uses a unique Fizeau etalon design to generate a spatial interferogram that is detected by a fast photodetector array. Using an on-board digital signal processor, the interferometric data is processed quickly into an accurate wavelength measurement. The combination of these technologies provides an unmatched, sustained measurement rate as high as 1 kHz. The wavelength of every pulse is measured for lasers operating at repetition rates of up to 1 kHz. At higher repetition rates, the system integrates all pulses arriving within a 1 ms window, or an external trigger can capture individual pulses.
Broad wavelength coverage and straightforward operation
The 871 Pulsed Laser Wavelength Meter is available in two broad wavelength configurations to satisfy most experimental requirements. These ranges are the VIS (350 – 1100 nm) and NIR (650 – 1700 nm). A pre-aligned fiber-optic input ensures optimum alignment resulting in uncompromised accuracy. The system operates with a PC running under Windows, via a USB or Ethernet interface. Software is provided to control measurement parameters and to report data, or the system can become part of an experiment using a library of commands for custom or LabVIEW programming.
| MODEL |
871B-VIS |
871B-NIR |
| LASER TYPE |
Pulsed and CW |
|
| WAVELENGTH RANGE |
350 – 1100 nm |
650 – 1700 nm |
| WAVELENGTH ACCURACY |
± 1 ppm |
|
| MEASUREMENT REPEATABILITY |
± 0.1 ppm |
|
| CALIBRATION |
Automatic with built-in wavelength standard |
|
| MINIMUM INPUT |
15 µJ (350 nm) |
15 µJ (630 nm) |
| MEASUREMENT RATE |
400 Hz |
1 kHz |
| OPTICAL INPUT |
Pre-aligned FC/UPC connector (graded-index fiber with ≤ 62.5 µm core diameter) |
|
| INSTRUMENT INTERFACE |
High-speed USB and Ethernet interface with Windows-based display program |
|
