New results in optical frequency measurement using a femtosecond laser

We report recent results obtained at the BNM-LPTF with the new frequency measurement chain based on a femtosecond laser. An I/sub 2/ stabilized Nd:YAG optical frequency standard, developed at the BNM-INM as a national standard for the "mise en pratique" of the definition of the meter has been measured for the first time.