Abstract: The invention relates to a lighting apparatus comprising a laser source (2) for emitting laser light (3). The lighting apparatus further comprises a first laser light modification unit (7) for modifying an optical characteristic of the laser light, which first laser light modification unit (7) is situated at a first location, and a second laser light modification unit (8) for modifying an optical characteristic of the laser light, which second laser light modification unit (8) is situated at a second location. The lighting apparatus further comprises a laser light distribution modification unit (4) for modifying a laser light distribution (5, 6) directed onto at least one of the first and second laser light modification units (7, 8) from a first to a second laser light distribution which is different from the first laser light distribution.

Abstract: The invention relates to a lighting apparatus comprising a laser source (2) for emitting laser light (3). The lighting apparatus further comprises a first laser light modification unit (7) for modifying an optical characteristic of the laser light, which first laser light modification unit (7) is situated at a first location, and a second laser light modification unit (8) for modifying an optical characteristic of the laser light, which second laser light modification unit (8) is situated at a second location. The lighting apparatus further comprises a laser light distribution modification unit (4) for modifying a laser light distribution (5, 6) directed onto at least one of the first and second laser light modification units (7, 8) from a first to a second laser light distribution which is different from the first laser light distribution.

Abstract: Proposed is a wavelength converting device (100) comprising a non-linear optical crystal (10) having periodically poled regions (20,30) with alternating polarity. The device (100) is characterized in that the period (41,42) of the poled regions along an axis (X) of the device vary in a direction (Y) perpendicular to the axis. The invention is based on the insight that a poling period corresponds to a given temperature. Thus, providing different poling periods along a direction in the wavelength converting device advantageously allows correlating the position of the device along that direction with a temperature.