Abstract: An example all polarization-maintaining, passively mode-locked linear fiber laser oscillator has a linear cavity. A semiconductor saturable absorber mirror (SESAM) is disposed at one end of the linear cavity. A polarization-maintaining gain fiber is operatively associated with the SESAM in the linear cavity, the gain fiber having normal dispersion. A polarization-maintaining undoped fiber is operatively associated with the SESAM in the linear cavity, the undoped fiber having anomalous dispersion. An output coupler is configured to generate laser light output from the linear cavity.

Abstract: A method for adjusting an optical cavity's length includes: measuring a first absolute frequency corresponding to a cavity mode, the optical cavity having a first and second mirror having respective first and second mirror surfaces separated by a first cavity length, and a resonator body interposed therebetween; determining a length difference between the first cavity length and a target cavity length corresponding to a plurality of resonance frequencies that includes a target absolute optical frequency; removing the first mirror to expose a first end of the resonator body; depositing, on one of the first end and the first mirror, a spacer having a thickness within a length tolerance of the determined length difference; and reversibly securing the first mirror to the resonator body, the spacer being between the first mirror and the resonator body, the first and second mirrors being separated, within the length tolerance, by an adjusted cavity length.

Abstract: A servo system includes multiple servo channels being driven by a common error signal. Each channel has a controller that receives an error signal and provides a drive signal to a driver. The servo channels are arranged serially, with a drive signal from one controller forming the error signal for a downstream controller. As a result, the downstream controller does not attempt to correct for phase error directly, but instead attempts to keep the upstream driver at or near its operational midpoint. The servo channels can be arranged in order of decreasing controller bandwidth, from fastest to slowest. In contrast with a parallel configuration, in which servo channels all simultaneously receive a common error signal, the serial configuration can allow each controller to use its full bandwidth, can eliminate crosstalk between servo channels, and can prevent saturation of upstream drive signals.

Abstract: A servo system includes multiple servo channels being driven by a common error signal. Each channel has a controller that receives an error signal and provides a drive signal to a driver. The servo channels are arranged serially, with a drive signal from one controller forming the error signal for a downstream controller. As a result, the downstream controller does not attempt to correct for phase error directly, but instead attempts to keep the upstream driver at or near its operational midpoint. The servo channels can be arranged in order of decreasing controller bandwidth, from fastest to slowest. In contrast with a parallel configuration, in which servo channels all simultaneously receive a common error signal, the serial configuration can allow each controller to use its full bandwidth, can eliminate crosstalk between servo channels, and can prevent saturation of upstream drive signals.

Abstract: Methods and systems are disclosed for displaying information topics that are available via an online help system. The methods and systems store information for given topics in a respective folder associated with a given topic, detect the selection of one of the folders associated with a topic of interest, search files at a hierarchical level in the selected folder to identify files of a predetermined type, locate HTML metatags that pertain to the display of help information, merge data associated with the HTML metatags into a HTML template file to generate an HTML file containing data associated with each of the located HTML metatags, and provide a table of contents for the topic of interest associated with the selected folder using the generated HTML file.

Abstract: Methods and systems are disclosed for displaying information topics that are available via an online help system. The methods and systems store information for given topics in a respective folder associated with a given topic, detect the selection of one of the folders associated with a topic of interest, search files at a hierarchical level in the selected folder to identify files of a predetermined type, locate HTML metatags that pertain to the display of help information, merge data associated with the HTML metatags into a HTML template file to generate an HTML file containing data associated with each of the located HTML metatags, and provide a table of contents for the topic of interest associated with the selected folder using the generated HTML file.

Abstract: The present invention discloses a method for dynamically generating an HTML-based information help system. The information help system provides a user with a table of contents of the information that is currently available on the system. The table of contents is generated by scanning specific files for meta-tag information. The gathered information is merged with pre-defined HTML template files that control the formatting and presentation of the information. The resulting table of contents which is provided to the user accurately reflects the current content of the information system. By dynamically generating the table of contents for the information help system, the present invention allows authors to add, remove, and change individual components of the system while ensuring that users are presented with an accurate and complete list of the information available for use.