Abstract: Methods, systems and devices for interference cancellation of high-power input signals in the analog domain are described. An example method of interference cancellation includes receiving, via an antenna, an analog signal comprising a signal of interest and one or more interfering signals, wherein the one or more interfering signals comprises a high-power interfering signal with a signal power greater than 15 dBm, determining, based on a reference signal corresponding to the high-power interfering signal, an update to at least one parameter of the reference signal, wherein the update is determined by minimizing a cost function of a difference between the reference signal and the high-power interfering signal, generating, based on the update to the at least one parameter, a modified reference signal, and generating, based on coupling the modified reference signal to the analog signal, an interference-canceled signal comprising the signal of interest.

Abstract: An analyzer system (10) for analyzing a sample (12) includes a MIR analyzer (34) for spectrally analyzing the sample (12) while the sample (12) is flowing in the MIR analyzer (34). The MIR analyzer (34) includes (i) a MIR flow cell (35C) that receives the flowing sample (12), (ii) a MIR laser source (35A) that directs a MIR beam (35B) in a MIR wavelength range at the sample (12) in the MIR flow cell (35C), and (iii) a MIR detector (35D) that receives light from the sample (12) in the MIR flow cell (35C) and generates MIR data of the sample (12) for a portion of the MIR wavelength range.

Abstract: A laser assembly (10) for generating a pulsed output beam (16) includes a quantum cascade device (12); and a laser driver (14A) that controls the voltage to the quantum cascade device (12) in a pulsed drive profile (950) to generate the pulsed output beam (16). The pulsed drive profile (950) includes a plurality of spaced on-time segments (952) in which the laser driver (14A) directs voltage to the quantum cascade device (12), and at least one off-time segment (954) in which the laser driver (14A) pulls down the voltage from the quantum cascade device (12). The off-time segment (954) occurs between two on-time segments (952).

Abstract: A chromatography analyzer system (10) for analyzing a sample (12) includes a MIR analyzer (34) for spectrally analyzing a sample fraction (12A) while the sample fraction (12A) is flowing in the MIR analyzer (34). The MIR analyzer (34) includes (i) a MIR flow cell (35C) that receives the flowing sample fraction (12A), (ii) a MIR laser source (35A) that directs a MIR beam (35B) in a MIR wavelength range at the sample fraction (12A) in the MIR flow cell (35C), and (iii) a MIR detector (35D) that receives light from the sample fraction (12A) in the MIR flow cell (35C) and generates MIR data of the sample fraction (12A) for a portion of the MIR wavelength range.

Abstract: A laser assembly (10) for generating a pulsed output beam (16) includes a quantum cascade device (12); and a laser driver (14A) that controls the voltage to the quantum cascade device (12) in a pulsed drive profile (950) to generate the pulsed output beam (16). The pulsed drive profile (950) includes a plurality of spaced on-time segments (952) in which the laser driver (14A) directs voltage to the quantum cascade device (12), and at least one off-time segment (954) in which the laser driver (14A) pulls down the voltage from the quantum cascade device (12). The off-time segment (954) occurs between two on-time segments (952).

Abstract: A chromatography analyzer system (10) for analyzing a sample (12) includes a MIR analyzer (34) for spectrally analyzing a sample fraction (12A) while the sample fraction (12A) is flowing in the MIR analyzer (34). The MIR analyzer (34) includes (i) a MIR flow cell (35C) that receives the flowing sample fraction (12A), (ii) a MIR laser source (35A) that directs a MIR beam (35B) in a MIR wavelength range at the sample fraction (12A) in the MIR flow cell (35C), and (iii) a MIR detector (35D) that receives light from the sample fraction (12A) in the MIR flow cell (35C) and generates MIR data of the sample fraction (12A) for a portion of the MIR wavelength range.

Abstract: An assembly (14) for analyzing a sample (15) includes a detector assembly (18); a tunable laser assembly (10); and (iii) a laser controller (10F). The detector assembly (18) has a linear response range (232) with an upper bound (232A) and a lower bound (232B). The tunable laser assembly (10) is tunable over a tunable range, and includes a gain medium (10B) that generates an illumination beam (12) that is directed at the detector assembly (18). The laser controller (10F) dynamically adjusts a laser drive to the gain medium (10B) so that the illumination beam (12) has a substantially constant optical power at the detector assembly (18) while the tunable laser assembly (10) is tuned over at least a portion of the tunable range.

Abstract: An assembly (14) for analyzing a sample (15) includes a detector assembly (18); a tunable laser assembly (10); and (iii) a laser controller (10F). The detector assembly (18) has a linear response range (232) with an upper bound (232A) and a lower bound (232B). The tunable laser assembly (10) is tunable over a tunable range, and includes a gain medium (10B) that generates an illumination beam (12) that is directed at the detector assembly (18). The laser controller (10F) dynamically adjusts a laser drive to the gain medium (10B) so that the illumination beam (12) has a substantially constant optical power at the detector assembly (18) while the tunable laser assembly (10) is tuned over at least a portion of the tunable range.