Multi-wavelength channel femtosecond beam combiner with independent GDD control

When multiplexing ultrashort laser beams of different wavelengths into a single beam, the pulse shape of each color must be managed individually due to the various accumulated GDD. This presents a challenge to the industry in terms of making the process compact and flexible. To address this issue, a thin film-based beam combiner has been designed and developed that not only redirects the channels by wavelength but also manages the reflected GDD independently. This opens the door to more practical applications in both industry and research labs.