What is the Femtosecond laser

Multiphoton excitation requires the simultaneous absorption of two photons with high energy on the cell surface, however; this phenomenon is very rare, a one in ten million chance, in nature. With this reason, FV1000MPE adopts a femtosecond pulse laser for light excitation.

A femtosecond is a unit of time that is equal to one quadrillionth (10^-15) of a second, and a light blinking at such an ultrashort interval is called femtosecond pulse. Using a laser which creates such a femtosecond pulse light, the extremely high laser intensity can be generated with a small output since the energy is compressed in such an ultrashort time, called femtosecond.

Femtsecond pulse image As for Multiphoton excitation to use in a femtsecond pulse, It is in about 100 femtsecond per 1 pulse and to repeat 80 MHz ~ 100MHz is an ideal.