Electronic DFB laser switching for continuous wave cavity ring-down spectroscopy

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Electronic DFB laser switching for continuous wave cavity ring-down spectroscopy

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Published

Continuous wave cavity ring-down spectroscopy using an electronically switched telecom distributed feedback laser module is demonstrated. By adding a compensation waveform current to the step-function switched laser current the laser wavelength stabilisation time is reduced to about 4 ms corresponding to a 200 Hz utmost ring-down transient repetition rate.

Inspec keywords: electronic switching systems; laser cavity resonators; laser stability; distributed feedback lasers

Other keywords: electronic DFB laser switching; compensation waveform current; continuous wave cavity ring-down spectroscopy; distributed feedback laser

Subjects: Laser resonators and cavities; Laser resonators and cavities

References

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