Melles Griot Helium Neon Laser Stabilised

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IDEX Health & Science line of Melles Griot highly reliable Helium Neon lasers deliver proven performance with long life and excellent stability. We offer a wide range of HeNe wavelengths with random or linear polarized output. Our frequency stabilized Helium Neon lasers offer frequency stability better than 1 MHz.

Red, green and yellow lasers with up to 35mW of output are available. We can also provide complete laser system sets with power supply and laser in a compact package, and for OEMs we offer plasma tubes and fully customized configurations.

All our laser products can be customized to meet your exact application requirements.

The 594-nm output wavelength of these lasers at closely corresponds to the sodium "d" and "D" lines which are used as a spectral reference in the optical industry. The wavelength also corresponds to the peak absorption of several popular fluorescent dyes.

Melles Griot stabilized helium neon laser systems are ideal for applications such as metrology, interferometry, and surface defect inspection that require a single, invariant frequency. These single-longitudinal-mode systems have a coherence length measured in kilometers, and exhibit excellent power stability for long periods of time. They permit highly repeatable, highly accurate measurements with superb resolution. The output is an economical and reliable calibration reference and a well-defined low-noise frequency source for fiber-optic and diode laser testing. Both output power and frequency can be varied over a wide range; however, changing the power will also change the frequency and vice versa. Critical specifications include:

  • 1-MHz frequency stability at 473.61254 THz
  • <0.2% power fluctuation over eight hours
  • Frequency tunable over 300 MHz
  • Linear polarization with >5000:1 extinction ratio.

 

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