A laser arrangement for optically amplifying ultrashort laser pulses, which are amplified by means of chirped pulse amplification, having a wavelength component in the wavelength range of 1.5 μm to 2.1 μm and temporal pulse durations in the pico- or femtosecond range, comprising at least the following components: - an optical unit for generating so-called seed laser pulses with temporal pulse durations in the pico- or femtosecond range and at least one spectral wavelength component with a spectral bandwidth of at least 100 nm within a wavelength spectrum between 1.5 μm and 2.1 μm, - an optical volume Bragg grating, VBG1 for short, which is constructed in such a manner and is downstream of the optical unit indirectly or directly in the beam path of the seed laser pulses, that laser pulses reflected in VBG1 are stretched with respect to the temporal pulse duration thereof and reduced with respect to the spectral bandwidth thereof compared to the seed laser pulses, - a fibre-based, optical amplifier arrangement indirectly or directly downstream of VBG1, along which at least portions of the reflected laser pulses are amplified, to obtain amplified laser pulses, and also - a further optical volume Bragg grating, VBG2 for short, which is constructed in such a manner and is downstream of the optical amplifier arrangement indirectly or directly, that amplified laser pulses reflected in VBG2 are compressed with respect to the temporal pulse duration thereof compared to the amplified laser pulses, characterized in that an optical dispersion compensation unit is provided, which has at least one dispersion opposite to the dispersion inherent to the fibre-based, optical amplifier arrangement and consists of a one-piece semiconductor material, which is transparent for the wavelengths 1.5-2.1 μm, and in that the dispersion compensation unit is arranged along the beam path of the reflected laser pulses upstream of the optical amplifier arrangement or the optical amplifier arrangement along the beam path of the amplified laser pulses or downstream of the reflected, amplified laser pulses. - an optical unit for generating so-called seed laser pulses with temporal pulse durations in the pico- or femtosecond range and at least one spectral wavelength component with a spectral bandwidth of at least 100 nm within a wavelength spectrum between 1.5 μm and 2.1 μm, - an optical volume Bragg grating, VBG1 for short, which is constructed in such a manner and is downstream of the optical unit indirectly or directly in the beam path of the seed laser pulses, that laser pulses reflected in VBG1 are stretched with respect to the temporal pulse duration thereof and reduced with respect to the spectral bandwidth thereof compared to the seed laser pulses, - a fibre-based, optical amplifier arrangement indirectly or directly downstream of VBG1, along which at least portions of the reflected laser pulses are amplified, to obtain amplified laser pulses, and also - a further optical volume Bragg grating, VBG2 for short, which is constructed in such a manner and is downstream of the optical amplifier arrangement indirectly or directly, that amplified laser pulses reflected in VBG2 are compressed with respect to the temporal pulse duration thereof compared to the amplified laser pulses,