HighFinesse Linewidth Analyzer
The Ultra-Low Noise Analyzer to measure, analyze and control your laser. Determine frequency noise, phase noise, visualize laser linewidth and linewidth shape and analyze power spectral density.
Beside the LWA approach, homo- and heterodyne delay-line techniques are commonly used for linewidth determination. The experimental setup necessary for this procedure is rather complex to build and requires several optical components.
Using optical delay lines will lead to distorted spectra with non-trivial evaluation needs. HighFinesse LWA yields the laser spectrum without approximation, allowing the most accurate characterization of laser noise.
HighFinesse LWA is an effective instrument to determine different noise sources that influence laser frequency and stability. Providing the complete laser noise spectrum from 10 Hz up to 10 MHz, the LWA enables the identification of noise sources by means of their characteristic peaks.
1) Power grid and supply noise 2) Acoustic and vibrational noise 3) Servo bumps from laser frequency stabilization
Up to Realtime
Control & Reduce
Look at the power spectral density chart to identify and evaluate the noise sources affecting your laser – to know if it‘s there, is the first step to reduce it.
The real-time signal output offers the option for a fast feedback loop that can be used to actively reduce the frequency noise and the linewidth of the laser. The evaluation and control of these parameters play a crucial role in all applications where low noise lasers are required.
Typical applications include quality control in laser manufacturing, laser characterization, optical frequency metrology, quantum technology, holography, fiber optic sensing.