Patent
Solid-state zig-zag slab optical amplifier
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TLDR
In this article, the authors present a solid-state laser architecture with a zig-zag amplifier, an image relaying telescope and a phase conjugation cell to produce a beam of extremely high quality and brightness.Abstract:
A solid-state laser architecture producing a beam of extremely high quality and brightness, including a master oscillator operating in conjunction with a zig-zag amplifier, an image relaying telescope and a phase conjugation cell. One embodiment of the laser architecture compensates for birefringence that is thermally induced in the amplifier, but injects linearly polarized light into the phase conjugation cell. Another embodiment injects circularly polarized light into the phase conjugation cell and includes optical components that eliminate birefringence effects arising in a first pass through the amplifier. Optional features permit the use of a frequency doubler assembly to provide output at twice optical frequencies, and an electro-optical switch or Faraday rotator to effect polarization angle rotation if the amplifier material can only be operated at one polarization. The zig-zag amplifier is cooled by flow of cooling liquid, preferably using longitudinal flow to minimize temperature gradients in a vertical direction, and has cooling channel seals disposed in dead zones that receive no light, to minimize optical damage to the seals. Light is input to the amplifier at a near normal angle of incidence, to minimize polarization by reflection and to permit a polarizer to be used to extract an output beam from the amplifier. Antireflective coatings on edges and on sides of the amplifier eliminate parasitic oscillations, and wedge-shaped windows provide uniform pumping by eliminating gaps between diode arrays.read more
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References
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Patent
Multiple internal reflection face-pumped laser
TL;DR: In this paper, a miniaturized face-pumped, face cooled laser device is described wherein wave front distortion is minimized by the passage of a coherent beam of electromagnetic radiation through an elongated, rectangularly cross-sectioned laser body in an off-axial direction to effect multiple total internal reflections of the beam from fluid cooled, parallelly extending faces of the laser body.
Journal ArticleDOI
Geometrical transformation of linear diode-laser arrays for longitudinal pumping of solid-state lasers
James R. Leger,W. C. Goltsos +1 more
TL;DR: In this article, a 200-stripe linear diode-laser array is geometrically transformed into a two-dimensional, symmetric virtual source with symmetric divergence to end pump a Nd:YAG laser.
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Rod laser with optical pumping from a source having a narrow emitting area
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Conductively cooled, diode-pumped solid-state slab laser
TL;DR: A conductively cooled, optically diode-pumped slab laser comprises a slab laser host 1 having transparent, thermally conductive heat sink means 2 bonded to its pump faces as discussed by the authors.