Abstract: Stabilizing an electromagnetic radiation (1) of an optical oscillator (3), in particular of a laser (13), includes measuring a deviation (35, 37, 43) between the electromagnetic radiation (1) of the optical oscillator (3) and a reference (21, 23, 39, 41) and generating a first deviation signal (35, 37, 43), controlling a first controller (55) with the first deviation signal (35, 37, 43), setting the first deviation signal (35, 37, 43, 38) by controlling at least a first manipulated variable (5, 7, 89) of at least two manipulated variables (5, 7, 89), the first manipulated variable (5, 7, 89) being controlled by a first output signal (57) of the first controller (55) and the first manipulated variable (5, 7, 89) affecting the first electromagnetic radiation (1) of the optical oscillator (3), and generating a modulation signal (65) with a modulation unit (63), and controlling the first or a second manipulated variable (5, 7, 89) with the modulation signal (65), demodulating the first output signal (57) of the f

Abstract: Operating an optical frequency comb assembly includes operating an optical frequency comb source to generate laser light constituting an optical frequency comb and introducing the laser light into a common light path and seeding at least one branch light path by the laser light from the common light path, the branch light path comprising at least one optical element. For the branch light path, a phase difference of a first frequency mode ?1 of the optical frequency comb is determined between laser light coupled out at a reference point within the frequency comb assembly upstream of the at least one optical element and laser light coupled out at a measurement point provided in the branch light path downstream of the at least one optical element. Phase correction for the laser light from the branch light path is based on a deviation of the determined phase difference from a target value.

Abstract: Operating an optical frequency comb assembly includes operating an optical frequency comb source to generate laser light constituting an optical frequency comb and introducing the laser light into a common light path and seeding at least one branch light path by the laser light from the common light path, the branch light path comprising at least one optical element. For the branch light path, a phase difference of a first frequency mode ?1 of the optical frequency comb is determined between laser light coupled out at a reference point within the frequency comb assembly upstream of the at least one optical element and laser light coupled out at a measurement point provided in the branch light path downstream of the at least one optical element. Phase correction for the laser light from the branch light path is based on a deviation of the determined phase difference from a target value.

Abstract: 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 (f0) of the frequency comb corresponding to the laser pulse, the frequency comb having a plurality of laser modes (fm) at a distance (frep) from one another, the frequencies of which can be described by the formula: fm=m*frep+f0, m being a natural number, and varying the offset frequency (f0) by varying a geometric phase (??) that is imparted to the carrier wave of the laser pulse per resonator circulation.

Abstract: In a resonator arrangement (1) including a resonator (2), an interferometer (9) is arranged inside the resonator (2) and includes at least a first and a second interferometer leg (9a, 9b). The two interferometer legs (9a, 9b) have optical path lengths (L1, L2) that differ from each other. According to the invention a splitting ratio is variably adjustable, with which the interferometer (9) splits radiation (8) circulating in the resonator (2) into the first and second interferometer legs (9a, 9b).

Abstract: 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 (f0) of the frequency comb corresponding to the laser pulse, the frequency comb having a plurality of laser modes (fm) at a distance (frep) from one another, the frequencies of which can be described by the formula: fm=m*frep+f0, m being a natural number, and varying the offset frequency (f0) by varying a geometric phase (??) that is imparted to the carrier wave of the laser pulse per resonator circulation.

Abstract: In a resonator arrangement (1) including a resonator (2) an interferometer (9) is arranged inside the resonator (2) and includes at least a first and a second interferometer leg (9a, 9b). The two interferometer legs (9a, 9b) have optical path lengths (L1, L2) that differ from each other. According to the invention a splitting ratio is variably adjustable, with which the interferometer (9) splits radiation (8) circulating in the resonator (2) into the first and second interferometer legs (9a, 9b).

Abstract: In a laser (12, 18) with a laser resonator (13), the laser resonator (13) has a non-linear optical loop mirror (1, 1?), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1?). The non-linear optical loop mirror (1, 1?) contains a non-reciprocal optical element (7, 7?) on a linear section of the NOLM. In addition to the NOLM, the laser resonator (13) has a linear cavity section. The linear section of the NOLM and the linear cavity section (19) are reassembled on a microoptical bench (112) or within a cylindrical carrier (112).

Abstract: In a laser (12, 18) with a laser resonator (13), the laser resonator (13) comprises a non-linear optical loop mirror (1, 1?), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1?). The invention is non-linear optical loop mirror (1, 1?) comprises a non-reciprocal optical element (7, 7?) on a linear section of the NOLM. In addition to the NOLM, the laser resonator (13) comprises a linear cavity section. The linear section of the NOLM and the linear cavity section (19) a reassembled on a microoptical bench (112) or within a cylindrical carrier (112).

Abstract: A laser (12, 18) with a laser resonator (13), the laser resonator (13) having a non-linear optical loop mirror (1, 1?), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1?). The non-linear optical loop mirror (1, 1?) has a non-reciprocal optical element (7, 7?).

Abstract: In a laser (12, 18) with a laser resonator (13), the laser resonator (13) comprises a non-linear optical loop mirror (1, 1?), NOLM, which is adapted to guide counter-propagating portions of laser pulses, and to bring the counter-propagating portions of laser pulses into interference with each other at an exit point (4) of the NOLM (1, 1?). The invention is characterized by the non-linear optical loop mirror (1, 1?) comprising a non-reciprocal optical element (7, 7?).