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Proceedings Paper

Research on inorganic cladding of neodymium phosphate glass in slab amplifier
Author(s): Bingyan Wang; Jianqiang Zhu; Haiyuan Li; Huai Xiong; Yangshuai Li; Yanli Zhang; Shenlei Zhou
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Paper Abstract

Neodymium phosphate glass (Nd:glass) is the typical gain medium in the large clear aperture slab amplifiers, and provide more than 99% energy of a high power laser facility. Cladding structure is employed for decreasing the amplified spontaneous emission (ASE) and parasitic oscillation (PO) which are the key limits for the gain of large clear aperture slab amplifier. Polymer cladding is generally used since it was proposed.

Polymer is an organic glue which has risk to decompose and fracture under high flash-lamp irradiation while the irradiation is a common condition in the operation of a high power laser facility. Once the polymer glue falls off, the suppression of ASE and PO of cladding structure would be damaged. In addition, the impurities existing in the glue may form the counteractive scattering sources and reduce the suppression of the cladding structure. Moreover, the decomposer of the organic glue may affect the cleanliness of the slab cavity. Thus, an inorganic edge cladding structure based on hydroxide-catalysis bonding (HCB) was proposed which can match the requirements of the cladding structure and evade the organic glue in the high flash-lamp irradiation slab cavity. An antireflective film was used as the medial material whose refractive index was matched with the cladding structure. Bonded samples were prepared based on HCB and confirmatory experiment under high flash-lamp irradiation was finished.

Paper Details

Date Published: 15 February 2018
PDF: 6 pages
Proc. SPIE 10525, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII, 105250G (15 February 2018); doi: 10.1117/12.2288986
Show Author Affiliations
Bingyan Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Jianqiang Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Haiyuan Li, Shanghai Institute of Optics and Fine Mechanics (China)
Huai Xiong, Shanghai Institute of Optics and Fine Mechanics (China)
Yangshuai Li, Shanghai Institute of Optics and Fine Mechanics (China)
Yanli Zhang, Shanghai Institute of Optics and Fine Mechanics (China)
Shenlei Zhou, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 10525:
High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VII
Stefan Kaierle; Stefan W. Heinemann, Editor(s)

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