Nūhou - No ke aha mākou e hoʻohana ai i ka Nd: YAG crystal ma ke ʻano he mea loaʻa i ka laser DPSS?

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He aha ka Laser Gain Medium?

ʻO ka laser gain medium kahi mea e hoʻonui ai i ka mālamalama e ka hoʻoulu ʻia ʻana. Ke hauʻoli nā ʻātoma a i ʻole nā molekole o ka mea waena i nā pae ikehu kiʻekiʻe, hiki iā lākou ke hoʻokuʻu i nā kiʻi kiʻi o kahi lōʻihi nalu i ka wā e hoʻi ai i kahi kūlana ikehu haʻahaʻa. Hoʻonui kēia kaʻina hana i ke kukui e hele ana ma waena o ke kikowaena, kahi mea nui i ka hana laser.

[ Blog pili:Nā mea nui o ka laser]

He aha ka Medium Gain Mau?

Hiki ke ʻokoʻa ke ʻano o ka loaʻa, ʻo ia hoʻikinoea, wai (wai), paʻa(nā aniani a i ʻole nā aniani i hoʻopaʻa ʻia me nā ion metala ʻole a i ʻole nā mea hoʻololi), a me nā semiconductor.Nā laser kūlana paʻa, no ka laʻana, hoʻohana pinepine i nā kristal e like me Nd: YAG (Neodymium-doped Yttrium Aluminum Garnet) a i ʻole nā aniani i hoʻopaʻa ʻia me nā mea ʻano honua. Hoʻohana nā lasers dye i nā mea hoʻonaninani i hoʻoheheʻe ʻia i loko o nā solvents, a hoʻohana nā lasers kinoea i nā kinoea a i ʻole nā hui kinoea.

Nā lāʻau laser (mai ka hema a i ka ʻākau): Ruby, Alexandrite, Er:YAG, Nd:YAG

ʻO nā ʻokoʻa ma waena o Nd (Neodymium), Er (Erbium), a me Yb (Ytterbium) ma ke ʻano he mea loaʻa.

pili mua i ko lākou mau nalu hoʻokuʻu ʻana, nā mīkini hoʻololi ikehu, a me nā noi, ʻoi aku hoʻi i ka pōʻaiapili o nā mea laser doped.

Nā lōʻihi hawewe:

- Er: Hoʻopuka pinepine ʻia ʻo Erbium ma 1.55 µm, aia i loko o ka ʻāina palekana-maka a maikaʻi loa no nā noi kelepona ma muli o kona haʻahaʻa haʻahaʻa i nā fiber optical (Gong et al., 2016).

- Yb: Hoʻopuka pinepine ʻo Ytterbium ma kahi o 1.0 a 1.1 µm, kūpono ia no nā ʻano noi like ʻole, me nā lasers kiʻekiʻe a me nā amplifier. Hoʻohana pinepine ʻia ʻo Yb ma ke ʻano he sensitizer no Er e hoʻomaikaʻi i ka pono o nā polokalamu Er-doped ma o ka hoʻololi ʻana i ka ikehu mai Yb a i Er.

- Nd: Hoʻokuʻu pinepine ʻia nā mea hana neodymium-doped ma kahi o 1.06 µm. Nd:YAG, no ka laʻana, kaulana no kona pono a hoʻohana nui ʻia i nā lasers ʻoihana a me nā lāʻau lapaʻau (Y. Chang et al., 2009).

Mechanism hoʻololi ikehu:

- Er a me Yb Co-doping: ʻO ka co-doping o Er a me Yb i loko o kahi mea hoʻokipa he mea maikaʻi no ka hoʻonui ʻana i ka hoʻokuʻu ʻana i ka pae 1.5-1.6 µm. Hana ʻo Yb ma ke ʻano he sensitizer maikaʻi no Er ma o ka hoʻomoʻa ʻana i ke kukui pamu a me ka hoʻololi ʻana i ka ikehu i nā ion Er, e alakaʻi ana i ka hoʻonui ʻana i ka hoʻokuʻu ʻana i ka hui kelepona. He mea koʻikoʻi kēia hoʻoili ʻana i ka ikehu no ka hana ʻana o nā mea hoʻonui ʻo Er-doped fiber amplifiers (EDFA) (DK Vysokikh et al., 2023).

- Nd: ʻAʻole makemake ʻo Nd i kahi sensitizer e like me Yb i nā ʻōnaehana Er-doped. Loaʻa ka maikaʻi o Nd mai kona hoʻopili pololei ʻana i ke kukui pāpaʻi a me ka hoʻokuʻu ʻana ma hope, e hoʻolilo iā ia i mea maʻalahi a maikaʻi hoʻi.

Nā noi:

- ʻE:Hoʻohana mua ʻia i ke kelepona ma muli o kona hoʻokuʻu ʻana ma 1.55 µm, e kūlike me ka puka aniani liʻiliʻi loa o nā fiber optical silica. He mea koʻikoʻi nā mediums loaʻa Er-doped no nā amplifiers optical a me nā lasers i nā ʻōnaehana kamaʻilio fiber optic lōʻihi.

- Yb:Hoʻohana pinepine ʻia i nā noi mana kiʻekiʻe ma muli o kāna ʻano uila uila maʻalahi e hiki ai i ka hoʻoheheʻe diode maikaʻi a me ka mana kiʻekiʻe. Hoʻohana pū ʻia nā mea Yb-doped e hoʻomaikaʻi i ka hana o nā ʻōnaehana Er-doped.

- Nd: He kūpono no ka nui o nā noi, mai ka ʻoki ʻana i ka ʻoihana a me ka welding i nā lasers lapaʻau. Nd: Ua waiwai nui ʻia nā lasers YAG no ko lākou pono, mana, a me ka versatility.

No ke aha mākou i koho ai iā Nd: YAG ma ke ʻano o ka loaʻa ʻana ma ka laser DPSS

ʻO ka laser DPSS kahi ʻano o ka laser e hoʻohana ana i kahi mea waiwai waiwai paʻa (e like me Nd: YAG) i puhi ʻia e kahi diode laser semiconductor. Hāʻawi kēia ʻenehana i nā lasers paʻa, hiki ke hana i nā kukui kiʻekiʻe i ka spectrum ʻike ʻia-a-infrared. No kahi ʻatikala kikoʻī, e noʻonoʻo paha ʻoe e ʻimi ma o nā ʻikepili ʻepekema kaulana a i ʻole nā mea hoʻopuka no nā loiloi piha ʻana i ka ʻenehana laser DPSS.

[Huahana pili :ʻO ka laser paʻa paʻa paʻa paʻa diode]

Nd: Hoʻohana pinepine ʻia ka YAG ma ke ʻano he kumu waiwai i nā modula laser semiconductor-pumped no nā kumu he nui, e like me ka mea i hōʻike ʻia e nā haʻawina like ʻole:

1.High Efficiency a me ka mana: Ua hōʻike ʻia kahi hoʻolālā a me ka hoʻohālikelike ʻana o ka ʻaoʻao ʻaoʻao Nd: YAG laser module i hōʻike ʻia i ka maikaʻi nui, me ka diode side-pumped Nd: YAG laser e hāʻawi ana i ka mana awelika kiʻekiʻe o 220 W me ka mālama ʻana i ka ikehu mau i kēlā me kēia pulse ma kahi ākea ākea. Hōʻike kēia i ka maikaʻi kiʻekiʻe a me ka hiki ke hoʻopuka i ka mana kiʻekiʻe o Nd: YAG lasers i ka wā e puhi ʻia e nā diodes (Lera et al., 2016).
2.Operational Flexibility a me ka hilinaʻi: Nd: Ua hōʻike ʻia nā seramika YAG e hana maikaʻi i nā lōʻihi hawewe like ʻole, me nā lōʻihi pale pale maka, me ka pono optical-to-optical kiʻekiʻe. Hōʻike kēia i ka versatility a me ka hilinaʻi o Nd: YAG ma ke ʻano he kumu waiwai i nā noi laser ʻē aʻe (Zhang et al., 2013).
3.Longevity a me ka maikaʻi o ka Beam: No ka noiʻi e pili ana i ka laser maikaʻi loa, diode-pumped, Nd:YAG i kona lōʻihi a me ka hana mau, e hōʻike ana i ka pono o Nd:YAG no nā noi e koi ana i nā kumu laser paʻa a hilinaʻi. Ua hōʻike ka haʻawina i ka hana lōʻihi me nā kiʻi ʻoi aku ma mua o 4.8 x 10 ^ 9 me ka ʻole o ka pōʻino optical, e mālama ana i ka maikaʻi beam maikaʻi loa (Coyle et al., 2004).
4.Highly Efficient hoomau-nalu hana:Ua hōʻike ʻia nā haʻawina i ka hana ʻoi loa o ka hawewe hoʻomau (CW) o Nd: YAG lasers, e hōʻike ana i ko lākou pono ma ke ʻano he kumu waiwai i nā ʻōnaehana laser diode-pumped. Loaʻa kēia i ka loaʻa ʻana o ka hoʻololi ʻana o ka optical kiʻekiʻe a me ka slope efficiencies, e hōʻike hou ana i ke kūpono o Nd: YAG no nā noi laser kiʻekiʻe (Zhu et al., 2013).

ʻO ka hui pū ʻana o ka maikaʻi kiʻekiʻe, ka mana mana, ka maʻalahi o ka hana, ka hilinaʻi, ka lōʻihi, a me ka maikaʻi o ka beam maikaʻi loa e lilo ai ʻo Nd:YAG i mea waiwai loaʻa i nā modula laser semiconductor-pumped no kahi ākea o nā noi.

Kuhikuhi

Chang, Y., Su, K., Chang, H., & Chen, Y. (2009). ʻO ka laser palekana Q-hoʻololi kūpono i ka maka ma 1525 nm me ka lua-hopena diffusion-hoʻopaʻa ʻia Nd:YVO4 kristal ma ke ʻano he ʻano Raman ponoʻī. Optics Express, 17(6), 4330-4335.

Gong, G., Chen, Y., Lin, Y., Huang, J., Gong, X., Luo, Z., & Huang, Y. (2016). ʻO ka ulu a me nā waiwai spectroscopic o Er:Yb:KGd(PO3)_4 kristal ma ke ʻano he 155 µm laser loaʻa medium. Maikaʻi Mea Hōʻikeʻike, 6, 3518-3526.

Vysokikh, DK, Bazakutsa, A., Dorofeenko, AV, & Butov, O. (2023). ʻO ke kumu hoʻohālikelike hoʻokolohua o Er/Yb loaʻa ka medium no nā mea hoʻonui fiber a me nā lasers. Ka Nupepa o ka Optical Society of America B.

Lera, R., Valle-Brozas, F., Torres-Peiró, S., Ruiz-de-la-Cruz, A., Galán, M., Bellido, P., Seimetz, M., Benlloch, J., & Roso, L. (2016). ʻO nā hoʻohālikelike o ka ʻike waiwai a me ka hana ʻana o kahi diode ʻaoʻao-pumped QCW Nd:YAG laser. Hoʻohana ʻia nā Optik, 55(33), 9573-9576.

Zhang, H., Chen, X., Wang, Q., Zhang, X., Chang, J., Gao, L., Shen, H., Cong, Z., Liu, Z., Tao, X., & Li, P. (2013). ʻO ka hana kiʻekiʻe Nd:YAG ceramic eye-safe laser e hana ana ma 1442.8 nm. Nā Leta Optics, 38(16), 3075-3077.

Coyle, DB, Kay, R., Stysley, P., & Poulios, D. (2004). Maikaʻi, hilinaʻi, lōʻihi ke ola, diode-pumped Nd:YAG laser no ke ākea topographical altimetry. Hoʻohana ʻia nā Optik, 43(27), 5236-5242.

Zhu, HY, Xu, CW, Zhang, J., Tang, D., Luo, D., & Duan, Y. (2013). ʻOi aku ka maikaʻi loa o ka nalu hoʻomau Nd:YAG seramika lasers ma 946 nm. Nā Palapala Kino Laser, 10.

Hōʻole:

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