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Measurement
Range
Linewidth
Range
Noise
Frequency Range
Noise
Sensitivity
Up to Realtime
Analysis
Characterization of frequency and phase noise of laser light sources has never been easier: The LWA-10k enables the user to characterize and optimize laser light sources with high precision over a broad wavelength range including the O-/E-/S-/C- and L-band for telecommunication sources and typical wavelengths for quantum optical applications in the IR range.
Supplying your laser light via a single-mode fiber (arbitrary light polarisation can be used) the LWA-10k supplies a real-time analogue voltage output proportional to the frequency deviations of the laser. The detection technique is based on a interferometric measurement principle and therefore there is no additional need for a highly stable narrow optical light reference.
The output can either be analyzed with the supplied Digitizer module and the software suite for quantitative analysis of the noise.
Versatile
Application
Detailed
Analysis
Live
Monitoring
Measurement of the intrinsic (Lorentzian) and
effective (optical) linewidth of your laser source
Frequency resolved laser noise analysis by means
of frequency noise density spectra
Laser control unit characterization
(supply noise, ground loop problems)
Identification of acoustical noise sources
Laser modulation characterization
(e.g. frequency dependent amplitude transfer function)
Feedback loop characterization
(Bandwidth, Servo bumps, frequency drifts)
Linewidth reduction/Coherence control
(PID controller required, not included)
In general, laser frequency noise can either be analyzed via the frequency noise density spectrum or the optical lineshape spectrum which contains much more information than the condensed number of the laser linewidth or the coherence time.
From the spectra, individual frequency components and special linewidth shapes (e.g. due to large index modulations) are directly visible and bring insight to the relevant linewidth parameters. The software suite incorporates both spectral representations and condensed linewidth numbers that can be directly derived from the time-resolved frequency deviations.
Determination of frequency modulation amplitudes
in the time-resolved frequency deviations (Timeseries)
Optical Linewidth estimation by beta-separation method
Intrinsic Linewidth measurement via the frequency noise density floor
Effective (Gaussian part) and intrinsic (Lorentzian part) linewidth analysis by fit to the optical spectrum
Detection of bistabilities and random telegraph noise in the lasing frequency by histogram of frequency deviations
Export possibilities for extended analysis with the software of choice
Due to the performance optimized software suite, it is possible to display the spectral information with a high repetition rate enabling realtime-operation. Therefore, the above applications can be exploited to do …
Time and state dependent analysis of the laser's linewidths
Optimizations and mechanical/electronic adjustments on your laboratory setup to the spectral signal and the linewidth
Health monitoring of your laser source
ECDL @ 1532 nm, < 400 kHz linewidth
Nd:YAG @ 1064 nm, < 50 kHz linewidth
Fiber-laser @ 1550 nm, < 10 kHz linewidth
ECDL @ 1532 nm, < 400 kHz linewidth
Nd:YAG @ 1064 nm, < 50 kHz linewidth
Fiber-laser @ 1550 nm, < 10 kHz linewidth
Don't hesitate to contact our service team for user defined functions or OEM applications. We are always open for customers requirements.