The model 821B pulsed laser wavelengthmeter measures absolute wavelength to an accuracy of ± 0.02 cm-1 over the range of 350-1100 nm or 630-1700 nm.

This system provides real-time laser wavelength information with an accuracy that is guaranteed by automatic calibration with a built-in wavelength standard. The result is the reliable accuracy that is required for the most demanding applications.

• Operates with pulsed and CW lasers, and OPOs.
• Absolute wavelength accuracy of ± 0.02 cm-1.
• Operation from 350 to 1100 nm or 630 to 1700 nm.
• Measurement rate of 200 Hz provides instantaneous wavelength information.

Bristol Instruments

821 Pulsed Laser Wavelength Meter

The 721 series provides the most complete analysis because it operates as both a high-accuracy laser wavelength meter and as a high-resolution laser spectrum analyzer.

Wavelength measurement and spectral analysis with one instrument.

Features:
• Absolute wavelength accuracy as high as ± 0.2 parts per million.
• Spectral resolution as high as 2 GHz.
• Operation available from 375 nm to 5.0 μm
• Operation with CW and high-repetition rate pulsed lasers (pulse width >50 ns, repetition rate >50 kHz)
• Input power requirement as low as 10 μmW

721		721B-MIR	721B-XIR
Visible 375-420nm 425-630nm 635-1100nm	NIR 500-630nm 635-1260nm 1270-1680nm	4µm-6.3µm	2µm-12µm
IR - 3.5µm-5µm

Bristol Instruments

721 Laser Spectrum Analyzer/Wavelength Meter

High-Accuracy Laser Wavelength Meter - The model 621A is offered for the most demanding experiments, measuring absolute wavelength to the highest accuracy of ± 0.2 ppm.

Two versions of the 621 series are available. For experiments that are less exacting, the model 621B is a lower-priced alternative.

• Accuracy ± 0.2 ppm for 621A Model
• Accuracy ± 0.75 ppm (± 1 ppm for MIR and XIR)for 621B Model
• Operation available from 375 nm to 12 μm

Bristol Instruments

621 Series - Laser Wavelength Meter

Model 621B-MIR Laser Wavelength Meter is the only way to accurately measure the absolute wavelength of CW lasers that operate in the mid-infrared (4-11 μm).

Bristol Instruments

621B-MIR Laser Wavelength Meter

Low Cost Laser Wavelength Meter - 521 Serie: is a compact system that provides accurate laser wavelength measurement, and is offered at a very attractive price.

• Measures CW laser wavelength to an accuracy as high as ± 0.005 nm.
• Built-in reference for continuous calibration
• Measurement rate as high as 10 Hz.
• Operation available from 400nm to 1100nm or 500nm to 1700nm
• Convenient, pre-aligned optical fiber input (GHz)
• Input power requirement as low as 5 uW.

Bristol Instruments

521 - Laser Wavelength Meter - Low Cost