Wavelength stability of multijunction diode laser in lidar

A light ranging and detection (LiDAR) system for providing reduced or eliminated wavelength variations of laser light, the system comprising:

• a semiconductor-based laser source emitting the laser light;
• an optical scanner configured to direct the laser light to a field-of-view;
• one or more optical elements disposed between the laser source and the optical scanner, the one or more optical elements being configured to direct the laser light from the laser source to the optical scanner;
• and
• a grating structure mounted to, or integrated with, an optical element of the one or more optical elements, one or more characteristics of the grating structure being configured to reduce or eliminate wavelength variations of the laser light caused by variations of one or more operational conditions of the laser source.

A vehicle comprising a system for providing reduced or eliminated wavelength variations of laser light, the system comprising:

• a semiconductor-based laser source emitting the laser light;
• an optical scanner configured to direct the laser light to a field-of-view;
• one or more optical elements disposed between the laser source and the optical scanner, the one or more optical elements being configured to direct the laser light from the laser source to the optical scanner;
• and
• a grating structure mounted to, or integrated with, an optical element of the one or more optical elements, one or more characteristics of the grating structure being configured to reduce or eliminate wavelength variations of the laser light caused by variations of one or more operational conditions of the laser source.