Abstract: The present invention belongs to the field of laser technology, particularly relates to a semiconductor laser, including a substrate, and lasers, fast axis collimation components, slow axis collimation components, steering compression optical systems, a polarization beam combination prism, a focusing lens and an optical fiber provided on the substrate, wherein the lasers can be arranged in two rows or one row. And lasers of the same row are all located in a same plane. Each laser is sequentially provided with a fast axis collimation component and a slow axis collimation component in the direction of an optical path. The lasers of the same row correspond to a group of steering compression optical systems used to steer and compress the light beams collimated by the fast axis collimation components and the slow axis collimation components. The polarization beam combination prism is used for combining two beams of lasers having been steered and compressed by two groups of the steering compression optical systems.

Abstract: The present invention discloses a laser beam combination apparatus, comprising: a water cooling plate, a beam combiner and two laser arrays; each of the laser arrays comprises N lasers, wherein N is a positive integer more than 1; the two laser arrays are fixed on an upper surface and a lower surface of the water cooling plate, respectively; and the beam combiner performs a spatial beam combination, a polarization beam combination or a wavelength beam combination of laser beams output from the two laser arrays.

Abstract: The present invention discloses a laser beam combination apparatus, comprising: a water cooling plate, a beam combiner and two laser arrays, each of the laser arrays comprises N lasers, wherein N is a positive integer more than 1; the two laser arrays are fixed on an upper surface and a lower surface of the water cooling plate, respectively; and the beam combiner performs a spatial beam combination, a polarization beam combination or a wavelength beam combination of laser beams output from the two laser arrays.

Abstract: The present invention discloses a structure of an input end of an optical fiber, comprising a first optical fiber and a second optical fiber; wherein the first optical fiber and the second optical fiber are coaxial, one end of the first optical fiber is used to receive light beam, and the other end of the first optical fiber is engaged with the second optical fiber; wherein the first optical fiber comprises a fiber core and a first cladding; the second optical fiber comprises a fiber core and a first cladding; wherein a diameter of the first cladding of the first optical fiber is larger than a diameter of the first cladding of the second optical fiber and a difference between them is larger than a first preset threshold; wherein a diameter of the fiber core of the first optical fiber is smaller than or equal to a diameter of the fiber core of the second optical fiber and a difference between them is smaller than a second preset threshold.

Abstract: The present invention discloses a structure of an input end of an optical fiber, comprising a first optical fiber and a second optical fiber; wherein the first optical fiber and the second optical fiber are coaxial, one end of the first optical fiber is used to receive light beam, and the other end of the first optical fiber is engaged with the second optical fiber; wherein the first optical fiber comprises a fiber core and a first cladding; the second optical fiber comprises a fiber core and a first cladding; wherein a diameter of the first cladding of the first optical fiber is larger than a diameter of the first cladding of the second optical fiber and a difference between them is larger than a first preset threshold; wherein a diameter of the fiber core of the first optical fiber is smaller than or equal to a diameter of the fiber core of the second optical fiber and a difference between them is smaller than a second preset threshold.

Abstract: The present invention belongs to the field of laser technology, particularly relates to a semiconductor laser, including a substrate, and lasers, fast axis collimation components, slow axis collimation components, steering compression optical systems, a polarization beam combination prism, a focusing lens and an optical fiber provided on the substrate, wherein the lasers can be arranged in two rows or one row. And lasers of the same row are all located in a same plane. Each laser is sequentially provided with a fast axis collimation component and a slow axis collimation component in the direction of an optical path. The lasers of the same row correspond to a group of steering compression optical systems used to steer and compress the light beams collimated by the fast axis collimation components and the slow axis collimation components. The polarization beam combination prism is used for combining two beams of lasers having been steered and compressed by two groups of the steering compression optical systems.

Abstract: A laser beam combination apparatus includes: a lasers array, an optical turning element, a transformation lens, a dispersion element and an external cavity mirror.