Filter for use with laser-pumped light engine

A luminaire, comprising:

• a light engine comprising a pump laser and a phosphor illuminated by the pump laser, the light engine configured to emit a light beam comprising light from the pump laser and light from the phosphor;
• and
• a dichroic filter configured to receive the light beam emitted from the light engine, the dichroic filter comprising:
• a first band pass region having a first predefined maximum transmissivity that is less than 70% and varies by no more than +/−10% across the first band pass region, the first band pass region extending from a first wavelength that is shorter than a shortest wavelength of the light from the pump laser to a second wavelength that is at least 5 nanometers longer than a 50% intensity of a longest wavelength of the light from the pump laser;
• a band reject region having a second predefined maximum transmissivity of less than 10% across the band reject region, the band reject region extending from a wavelength longer than the second wavelength to a predefined third wavelength, the band reject region rejecting at least some shorter wavelengths of the light from the phosphor;
• and
• a second band pass region having a third predefined maximum transmissivity, the second band pass region beginning at a wavelength longer than the predefined third wavelength.