ʻO ka pae wela haʻahaʻa barium metaborate (β-BaB₂O₄, BBO no ka pōkole) pili i ka ʻōnaehana kristal tripartite, 3m hui kiko. I ka makahiki 1949, Levinet al. ʻike ʻia ka pae haʻahaʻa haʻahaʻa barium metaborate BaB₂O₄ pūhui. I ka makahiki 1968, Brixneret al. hoʻohana ʻia ʻo BaCl₂ e like me ka flux e loaʻa ai ka aniani hoʻokahi e like me ka nila. I ka makahiki 1969, ua hoʻohana ʻo Hubner iā Li₂O e like me ka flux e ulu 0.5mm × 0.5mm × 0.5mm a ana i ka ʻikepili kumu o ka density, nā ʻāpana cell a me ka hui ākea. Ma hope o ka makahiki 1982, ua hoʻohana ʻo Fujian Institute of Matter Structure, Chinese Academy of Sciences i ke ʻano hoʻoheheʻe-paʻakai-anoano-crystal no ka ulu ʻana i ke aniani nui hoʻokahi i ka flux, a ʻike ʻia ʻo BBO crystal he mea maikaʻi loa i ka ultraviolet frequency-double material. No ka noi hoʻololi Q-hoʻololi electro-optic, loaʻa i ka BBO crystal kahi hemahema o ka coefficient electro-optic haʻahaʻa e alakaʻi ai i ka hapalua hawewe kiʻekiʻe, akā loaʻa iā ia ka pōmaikaʻi o ka paepae pōʻino laser kiʻekiʻe.

Ua hoʻokō ka Fujian Institute of Matter Structure, Chinese Academy of Science i kahi ʻano hana ma ka ulu ʻana o nā kristal BBO. I ka makahiki 1985, ua ulu ʻia kahi aniani hoʻokahi me ka nui o φ67mm×14mm. Ua hiki ka nui aniani i ka φ76mm × 15mm i ka makahiki 1986 a me ka φ120mm × 23mm i ka makahiki 1988.

ʻO ka ulu ʻana o nā kristal ma luna o nā mea āpau e hoʻohana i ke ʻano molten-salt seed-crystal method (i ʻike ʻia ʻo ke ʻano top-seed-crystal method, flux-lifting method, etc.). ʻO ka ulu ʻana o ke aniani i kaclohi ka kuhikuhi ʻana o ka axis, a paʻakikī ke loaʻa i ka kristal lōʻihi kiʻekiʻe. Eia kekahi, ʻoi aku ka liʻiliʻi o ka coefficient electro-optic o BBO crystal, a ʻo ke aniani pōkole ʻo ia ka mea e koi ʻia ka volta hana kiʻekiʻe. I ka makahiki 1995, Goodnoet al. Ua hoʻohana ʻo BBO i mea electro-optic no ka EO Q-modulation o Nd: YLF laser. ʻO ka nui o kēia kristal BBO he 3mm × 3mm × 15mm (x, y, z), a ua ʻae ʻia ka transverse modulation. ʻOiai ʻo ka lākiō lōʻihi-kiʻekiʻe o kēia BBO hiki i ka 5: 1, ʻo ka hawewe hawewe haʻahaʻa i ka 4.6 kV, ʻo ia hoʻi ma kahi o 5 mau manawa o ka EO Q-modulation o LN kristal ma lalo o nā kūlana like.

I mea e hōʻemi ai i ka uila hana, hoʻohana ʻo BBO EO Q-switch i ʻelua a ʻekolu paha kristal i hui pū ʻia, kahi e hoʻonui ai i ka poho hoʻokomo a me ke kumukūʻai. Nikelaet al. ua hoemi i ka hapalua hawewe o BBO kristal ma o ka hana ana i ka malamalama ma ke aniani no kekahi mau manawa. E like me ka mea i hōʻike ʻia ma ke kiʻi, hele ka kukuna laser i loko o ke aniani no ʻehā mau manawa, a ʻo ka lohi o ka pae i hoʻokumu ʻia e ke aniani hoʻohālikelike kiʻekiʻe i kau ʻia ma 45 ° ua uku ʻia e ka pā nalu i hoʻokomo ʻia i ke ala optical. Ma kēia ala, hiki i ka haʻahaʻa haʻahaʻa ka haʻahaʻa haʻahaʻa o kēia BBO Q-switch i ka 3.6 kV.

Kiʻi 1. BBO EO Q-modulation me ka haʻahaʻa haʻahaʻa haʻahaʻa hawewe - WISOPTIC

I ka makahiki 2011 o Perlov et al. Ua hoʻohana ʻo NaF ma ke ʻano he flux e ulu ai i ke aniani BBO me ka lōʻihi o 50mm inc-axis direction, a loaʻa iā BBO EO mea me ka nui o 5mm × 5mm × 40mm, a me ka optical uniformity ʻoi aku ka maikaʻi ma mua o 1 × 10⁻⁶ knm⁻¹, i kūpono i nā koi o nā noi EO Q-switching. Eia naʻe, ʻoi aku ka nui o ka ulu ʻana o kēia ʻano ma mua o 2 mau mahina, a ke kiʻekiʻe nei ke kumukūʻai.

I kēia manawa, ʻo ka helu EO haʻahaʻa haʻahaʻa o ka BBO crystal a me ka paʻakikī o ka ulu ʻana i ka BBO me ka nui nui a me ke ʻano kiʻekiʻe ke kāohi nei i ka noi hoʻololi EO Q-switch o BBO. Eia nō naʻe, ma muli o ka paepae hōʻino laser kiʻekiʻe a me ka hiki ke hana ma ke alapine repetition kiʻekiʻe, ʻo BBO crystal ke ʻano o ka EO Q-modulation material me ka waiwai nui a me ka hoʻohiki ʻana i ka wā e hiki mai ana.

Kiʻi 2. BBO EO Q-Switch me ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa - Hana ʻia e WISOPTIC Technology Co., Ltd.