Semiconductor Laser with Optical Feedback - Bulk - 16GHz Detection Bandwidth
Data and Resources
Provides individual links to download files
Metadata for Semiconductor Laser with Optical Feedback - Bulk - 16GHz...
Manifest for resource Semiconductor Laser with Optical Feedback - Bulk -...
|Author||Joshua P. Toomey|
|Maintainer||Dr Joshua P Toomey, MQ Photonics Research Centre, Dept of Physics and Astronomy, Macquarie University|
|detailed_info||This data is being provided to be used in the context of the SIEF project 'Big Data Knowledge Discovery'. Any use of this data should cite the following reference: J. P. Toomey and D. M. Kane, 'Mapping the dynamic complexity of a semiconductor laser with optical feedback using permutation entropy,' Optics Express 22 (2), 1713-1725 (2014). This data set was recorded from an experimental semiconductor laser subject to optical feedback on 21/02/13. Laser wavelength ~ 830nm. External cavity round trip time 4.5ns. During the experiment, 2 system parameters were varied: the optical feedback level and laser injection current. - Optical feedback was varied by changing the RF power to an acousto-optic modulator (AOM) which varies the amount of laser power transmitted in the 0th order beam. A voltage between 0V-1V corresponds to maximum transmission (0V) and minimum transmission (1V). The actual power transmitted by the AOM is not a linear relationship with voltage. Relative feedback level can be approximated from the reduction in laser threshold. - Laser injection is controlled by directly varying the current supply to the device (Profile ITC502 Laser Diode Combi-controller). Laser was held at a constant 25C. The dataset contains 50,451 output power time series recorded from the laser using a fast photodiode (Discovery Semiconductors DCS30S 22GHz) and a 16GHz realtime oscilloscope (Tektronix DSA72004C) for different settings of: - Injection (251 values = 45mA to 70mA in 0.1mA steps) - Feedback (201 values from 0.4V to 0.8V in 0.002V steps) The filenames consist of the AOM and INJ values at which the data was recorded: e.g. AOM_0.642V_INJ_45.2mA.h5 : feedback = 0.642 V, injection = 45 mA Each hdf5 file consist of a single dataset called 'TimeSeries'. This contains a time series of amplitude values measured as the voltage across the 50ohm oscilloscope input. Time series were sampled at 50GSamples/s (20ps per data point) and contain 50,000pts for a total record length of 1microsecond.|
|reference||J. P. Toomey and D. M. Kane, 'Mapping the dynamic complexity of a semiconductor laser with optical feedback using permutation entropy,' Optics Express 22 (2), 1713-1725 (2014).|