➀ Researchers at the National Institute of Science and Technology (NIST) have developed a compact green laser that generates the full spectrum of orange, yellow, and green wavelengths; ➁ The technology has potential applications in medical devices, quantum information technologies, and underwater communications; ➂ The laser is created using existing semiconductor laser wavelengths and nonlinear optical processes, with the ability to adjust the output color by changing device geometry and pump wavelength; ➃ The design allows for over 150 different wavelengths within the green gap, offering flexibility for various applications.