Accurate Measurement of Optical Resonator Finesse
- Resource Type
- Periodical
- Authors
- Galzerano, G.; Suerra, E.; Giannotti, D.; Canella, F.; Vicentini, E.; Cialdi, S.
- Source
- IEEE Transactions on Instrumentation and Measurement IEEE Trans. Instrum. Meas. Instrumentation and Measurement, IEEE Transactions on. 69(11):9119-9123 Nov, 2020
- Subject
- Power, Energy and Industry Applications
Components, Circuits, Devices and Systems
Measurement by laser beam
Frequency modulation
Frequency measurement
Optical resonators
Resonant frequency
Mirrors
Resonators
Optical measurements
optical resonators
resonator finesse and quality factor
synchronous detection schemes
- Language
- ISSN
- 0018-9456
1557-9662
We report on a novel and general measurement technique to characterize the finesse of optical resonators. The method retrieves the cavity transmission profile coefficient by using an amplitude modulation of the probe beam and a synchronous detection scheme. Both the real and imaginary parts of the transmission profile can be accurately measured. Validation of the method is performed using two different cavity configurations, a linear and a ring resonator, probed by both continuous-wave and mode-locked laser sources. A comparison with respect to conventional cavity-ring-down measurement scheme shows the accuracy of the proposed method.