Abstract: An observation device includes at least one day vision channel, an information channel with a graphic electronic display for producing a display image and a combination optical system for combining the day vision channel and the information channel, so that a combined overall image forms.

Abstract: A laser system has an output/input coupler unit (49) with a circulator (37). An output of the circulator (37) is operationally connected to a detector unit (43). The input/output (EA37) of the circulator is operationally connected to a transmitter and a receiver optics 41. Laser light is input to the circulator (E37). The input (E37), output (A37) and output/input (EA37) of the circulator are optical fibers. The pulsed diode (3) is not temperature stabilized. To reduce amplified spontaneous emission (ASE) generated in the optical fiber amplifier (9), a narrow band-pass filter unit (29) is used. Filter unit (29) has a central wavelength with a temperature dependence which is matched to the temperature dependent wavelength shift of the pulsed diode (3).

Abstract: A laser-system comprises master-oscillator/power-amplifier (51) whereby the master-oscillator comprises a pulsed diode (3) and a pumped active optical fiber power-amplifier (9). Substantially all guides of laser light (5, 9, 31, 29, 33, 25, 35, 39, 45) are optical fibers. The pulsed diode (3) is not temperature stabilized. To reduce nevertheless amplified spontaneous emission generated in the optical fiber amplifier (9), a narrow band-pass filter unit (29) is used. Filter unit (29) has a central wavelength with a temperature dependence which is matched to the temperature dependent wavelength shift of the pulsed diode (3).

Abstract: Laser light (?L) within a spectrum range is generated (51g) and filtered (29g). Thereby the spectral location of the filter characteristic (?F) is shifted in a controlled manner (60) to establish a desired characteristic of output laser light as for considering a temperature depended shift (?Ñ) of the spectrum range generated by the laser source (51g).

Abstract: An observation device includes at least one day vision channel, an information channel with a graphic electronic display for producing a display image and a combination optical system for combining the day vision channel and the information channel, so that a combined overall image forms.

Abstract: So as to establish laser light with a desired characteristic downstream a laser light source (151), the light is amplified by an amplifier (107) which is gain modulated (E107G).

Abstract: A laser system has an output/input coupler unit (49) with a circulator (37). An output of the circulator (37) is operationally connected to a detector unit (43). The input/output (EA37) of the circulator is operationally connected to a transmitter and a receiver optics 41. Laser light is input to the circulator (E37). The input (E37), output (A37) and output/input (E A37) of the circulator are optical fibres. The pulsed diode (3) is not temperature stabilized. To reduce amplified spontaneous emission (ASE) generated in the optical fibre amplifier (9), a narrow band-pass filter unit (29) is used. Filter unit (29) has a central wavelength with a temperature dependence which is matched to the temperature dependent wavelength shift of the pulsed diode (3).

Abstract: Laser light (?L) within a spectrum range is generated (51g) and filtered (29g). Thereby the spectral location of the filter characteristic (?F) is shifted in a controlled manner (60) to establish a desired characteristic of output laser light as for considering a temperature depended shift (?Ñ) of the spectrum range generated by the laser source (51g).

Abstract: A laser-system comprises master-oscillator/power-amplifier (51) whereby the master-oscillator comprises a pulsed diode (3) and a pumped active optical fibre power-amplifier (9). Substantially all guides of laser light (5, 9, 31, 29, 33, 25, 35, 39, 45) are optical fibres. The pulsed diode (3) is not temperature stabilized. To reduce nevertheless amplified spontaneous emission generated in the optical fibre amplifier (9), a narrow band-pass filter unit (29) is used. Filter unit (29) has a central wavelength with a temperature dependence which is matched to the temperature dependent wavelength shift of the pulsed diode (3).