Infrared (IR) emitters, such as infrared light-emitting diodes (LEDs), typically produce a specific wavelength or a narrow range of wavelengths within the infrared spectrum. The specific wavelength or range of wavelengths depends on the design and materials used in the emitter.
In general, a single IR emitter produces a fixed wavelength or a specific range of wavelengths. This means that it cannot produce different wavelengths simultaneously. The emitted light from the IR emitter will have a characteristic wavelength determined by the energy bandgap of the semiconductor material used in the emitter.
However, it is possible to have multiple IR emitters with different wavelengths in the same device. For example, some devices may have arrays or clusters of IR emitters, each designed to emit light at a different wavelength. These emitters can be individually controlled to produce light at their specific wavelengths, allowing for different combinations and intensities of emitted light.
So, while a single IR emitter generally produces a fixed wavelength or range of wavelengths, it is possible to have multiple emitters with different wavelengths within the same device, enabling the production of various wavelengths individually or in combination.