30-03-2017 дата публикации
Номер: US20170093117A1
Автор:
Wolfgang HAENSEL,
Tilo STEINMETZ,
Marc FISCHER,
Matthias LEZIUS,
Ronald HOLZWARTH,
HAENSEL WOLFGANG,
STEINMETZ TILO,
FISCHER MARC,
LEZIUS MATTHIAS,
HOLZWARTH RONALD,
HAENSEL Wolfgang,
STEINMETZ Tilo,
FISCHER Marc,
LEZIUS Matthias,
HOLZWARTH Ronald
Принадлежит:
A method for operating a laser device, including providing a laser pulse in a resonator so that the laser pulse circulates in the resonator, the laser pulse having a carrier wave; determining an offset frequency (f) of the frequency comb corresponding to the laser pulse, the frequency comb having a plurality of laser modes (f) at a distance (f) from one another, the frequencies of which can be described by the formula: f=m*f+f, m being a natural number, and varying the offset frequency (f) by varying a geometric phase (Δφ) that is imparted to the carrier wave of the laser pulse per resonator circulation. 1. Method for operating a laser device comprising the steps of:a) providing a laser pulse in a resonator so that said laser pulse circulates in said resonator, said laser pulse having a carrier wave,{'sub': 0', 'm', 'rep', 'm', 'rep', '0, 'b) determining an offset frequency fof the frequency comb corresponding to said laser pulse, said frequency comb having a plurality of laser modes fat a distance ffrom one another, the frequencies of which can be described by the formula f=m*f+f, m being a natural number, and'}{'sub': '0', 'c) varying said offset frequency fby varying a geometrical phase which imparts a phase circulation delay to said carrier wave of said laser pulse-per resonator circulation.'}2. Method according to claim 1 , wherein varying said geometric phase is performed such that the group circulation time of said laser pulse in said resonator is thereby not changed and fis therefore not or not significantly changed.3. Method according to claim 1 , wherein varying the geometric phase is achieved by varying the orientation claim 1 , in particular by rotation about the optical axis of said resonator claim 1 , of at least a birefringent and/or a polarizing element.4. Method according to claim 3 , wherein steps b) and c) are repeatedly performed consecutively and the nature of the variation of the orientation of said birefringent and/or said polarizing element ...
Подробнее
