Light generating system with CCT-tunable laser

A light generating system comprising a first light generating device, a second light generating device, a luminescent material, a first optical element, and a control system, wherein:

• the first light generating device is configured to generate blue first device light, wherein the first light generating device comprises one or more of a laser diode and a superluminescent diode;
• wherein the second light generating device is configured to generate red second device light, wherein the second light generating device comprises one or more of a laser diode and a superluminescent diode;
• the luminescent material is configured downstream of the first light generating device, wherein the luminescent material is configured to convert at least part of the first device light into luminescent material light having one or more wavelengths in the green-yellow wavelength range;
• the first optical element is configured in a light receiving relationship with the first light generating device and the luminescent material;
• wherein (i) the first optical element has a controllable wavelength dependent transmission in the blue wavelength range, and/or (ii) the first optical element has a controllable wavelength dependent reflection in the blue wavelength range;
• the light generating system is configured to generate system light comprising one or more of the first device light, the second device light, and the luminescent material light;
• the control system is configured to control a spectral power distribution of the system light by controlling the first optical element, wherein the control system is configured to control the correlated color temperature of the system light at a value selected from the range of 1800-6500 K, wherein the correlated color temperature of the system light is controllable over a CCT control range of at least 250 K within the range of 1800-6500 K;
• and
• the light generating system further comprising a plurality of first light generating devices, wherein two or more first light generating devices are configured to generate first device light having different centroid wavelengths in the blue wavelength range, wherein the control system is further configured to control the spectral power distribution of the system light by controlling radiant fluxes of the device light of the two or more first light generating devices.