Abstract: Aspects of the present disclosure are directed to methods and apparatuses for generating laser light. As may be implemented in accordance with one or more embodiments, laser light is generated at a laser light source and is modulated in response to a frequency modulation signal, to generate a plurality of different wavelengths of laser light. The frequency modulation signal is generated, for each particular one of the wavelengths of laser light, at a respective seeding frequency corresponding to the particular one of the wavelengths in which the seeding frequency is different for each of the different wavelengths. Such an approach may, for example, involve generating the frequency modulation signal with a frequency generator circuit and using the frequency modulation signal to control an electro-optical modulator for modulating the wavelength of the laser light.

Abstract: Systems, methods, and devices of the various embodiments may provide a fast and precise methods for continuously monitoring and measuring the absolute wavelength of monochromatic radiation sources, such as lasers, etc., irrespective of the temporal profile of the source (i.e., continuous wave, modulated, or pulsed). Radiation power measurement may also be enabled by the various embodiment methods. The various embodiment methods may utilize high-speed low-noise detection to enable fast and accurate measurements. High-precision wavelength and power measurement may be achieved in the various embodiments to monitor radiation source jitters and fluctuations, without relying on frequency transforms or dispersive optics. Both wavelength and power may be measured simultaneously or sequentially in various embodiments.

Abstract: Systems, methods, and devices of the various embodiments may provide a fast and precise methods for continuously monitoring and measuring the absolute wavelength of monochromatic radiation sources, such as lasers, etc., irrespective of the temporal profile of the source (i.e., continuous wave, modulated, or pulsed). Radiation power measurement may also be enabled by the various embodiment methods. The various embodiment methods may utilize high-speed low-noise detection to enable fast and accurate measurements. High-precision wavelength and power measurement may be achieved in the various embodiments to monitor radiation source jitters and fluctuations, without relying on frequency transforms or dispersive optics. Both wavelength and power may be measured simultaneously or sequentially in various embodiments.

Abstract: Aspects of the present disclosure are directed to methods and apparatuses for generating laser light. As may be implemented in accordance with one or more embodiments, laser light is generated at a laser light source and is modulated in response to a frequency modulation signal, to generate a plurality of different wavelengths of laser light. The frequency modulation signal is generated, for each particular one of the wavelengths of laser light, at a respective seeding frequency corresponding to the particular one of the wavelengths in which the seeding frequency is different for each of the different wavelengths. Such an approach may, for example, involve generating the frequency modulation signal with a frequency generator circuit and using the frequency modulation signal to control an electro-optical modulator for modulating the wavelength of the laser light.