The National Institute of Standards and Technology (NIST) is conducting market research through a Sources Sought Notice for a femtosecond laser system intended for Sum Harmonic Generation (SHG) microscopy. The primary objective is to identify potential sources capable of providing a fixed frequency femtosecond laser system that meets specific technical requirements, including a pulse duration of less than 150 femtoseconds, a repetition frequency of 100 MHz, and an average output power below 500 mW, all while being compatible with existing spectroscopic infrastructure. This equipment is crucial for advancing research in quantum materials and their properties, which are essential for future technologies beyond conventional computing. Interested vendors should submit their responses, including company details and product specifications, to Cielo Ibarra at cielo.ibarra@nist.gov, with responses encouraged before the closing date. Note that this notice is for market research purposes only and does not constitute a commitment to issue a solicitation or award a contract.