Photonic integrated circuit comprising gain medium, and optoelectronic device

A photonic integrated circuit comprising:

• a pump laser diode configured to emit pump radiation;
• a first gain medium configured to absorb the pump radiation and emit first laser radiation;
• a first and a second resonator mirror one of which is arranged in a light path between the pump laser diode and the first gain medium and the other one of which is arranged on a side of the first gain medium facing away from the pump laser diode wherein a first optical resonator is formed between the first and the second resonator mirror further comprising:
• a second optical resonator having an associated first and second resonator mirror and a second gain medium arranged in the second optical resonator and configured to absorb the pump radiation and emit second laser radiation having a wavelength different from the wavelength of the first laser radiation;
• and
• an optical switch configured to selectively supply pump radiation to the first or the second optical resonator.