Potassium dideuterium phosphate (DKDP) wani nau'i ne na kristal na gani mara kyau tare da kyawawan kaddarorin electro-optic da aka haɓaka a cikin 1940s. Ana amfani dashi ko'ina a cikin oscillation na gani parametric oscillation, electro-optic Q-canzawa, Electro-optic modulation da sauransu. DKDP crystal yana dakashi biyu: lokaci monoclinic da tetragonal lokaci. The mai amfani DKDP crystal shine tetragonal lokaci wanda nasa ne na D_2d-42m kungiyar maki da ID¹²_2d -42d rukunin sararin samaniya. DKDP shine isomorphictsari potassium dihydrogen phosphate (KDP). Deuterium ya maye gurbin hydrogen a cikin KDP crystal don kawar da tasirin shayarwar infrared wanda ya haifar da girgizar hydrogen.DKDP crystal tare da mafi girma deuteration beraio da mafi kyawun lantarki kaddarorin kuma mafi kyau kaddarorin da ba na layi ba.

Tun 1970s, ci gaban Laser Im Crashin daidaituwa Ffasahar amfani (ICF) ta inganta haɓakar ci gaban jerin lu'ulu'u na photoelectric, musamman KDP da DKDP. Kamar yadda an Electro-Optical and nonlinear Optical material amfani a ICF, crystal shine ake bukata don samun babban watsawa a cikin igiyoyin igiya daga kusa-ultraviolet zuwa kusa-infrared, babban electro-optical coefficient da mara kan layi coefficient, babban lalacewa kofa, da zama iya zama shiryad in babban-budewa kuma tare da high- Tantancewar inganci. Ya zuwa yanzu, kawai KDP da DKDP lu'ulu'u hadu dase bukatun.

ICF tana buƙatar girman DKDP bangaren don isa 400-600 mm. Yawancin lokaci yana ɗaukar shekaru 1 ~ 2 don girmaDKDP crystal tare da irin wannan girman girman ta hanyar gargajiya na Ruwan ruwa mai sanyaya bayani, don haka an gudanar da aikin bincike da yawa zuwa samu saurin girma na lu'ulu'u na DKDP. A 1982, Bespalov et al. yayi nazarin fasahar haɓaka saurin girma na DKDP crystal tare da ɓangaren giciye na 40 mm×40 mm, kuma girman girma ya kai 0.5-1.0 mm / h, wanda shine tsari na girma fiye da hanyar gargajiya. A 1987, Bespalov et al. samu nasarar girma high quality-DKDP lu'ulu'u tare da girman 150 mm×150 mm×mm80 ku ta ta amfani da irin wannan dabarar girma mai sauri. A shekarar 1990, Chernov et al. samu lu'ulu'u na DKDP tare da taro na 800 g ta amfani da batu-hanyar iri. Yawan girma na DKDP lu'ulu'u a cikin Z-hanyar isad 40-50 mm / d, da waɗanda ke ciki X- da Y-kwatance kaid 20-25 mm/d. Lawrence Livermore Ƙasa Laboratory (LLNL) ya gudanar da bincike mai yawa akan shirye-shiryen manyan KDP lu'ulu'u da lu'ulu'u na DKDP don bukatun Nna kasa da kasa Wurin kunna wuta (NIF) na Amurka. A shekarar 2012,Masu bincike na kasar Sin sun ci gaba crystal DKDP tare da girman 510 mm×mm 390×mm 520 daga abin da danyen DKDP bangaren nau'in II mita ninki biyu tare da girman 430 mm ya kasance sanya.

Aikace-aikace masu sauyawa na Electro-optical Q suna buƙatar lu'ulu'u na DKDP tare da babban abun ciki na deuterium. A 1995, Zaitseva et al. ya girma lu'ulu'u na DKDP tare da babban abun ciki na deuterium da ƙimar girma na 10-40 mm/d. A 1998, Zaitseva et al. samu lu'ulu'u na DKDP tare da kyawawan ingancin gani, ƙananan ƙarancin rarrabuwar kawuna, babban daidaituwar gani da babban lalacewa ta hanyar amfani da hanyar tacewa ci gaba. A cikin 2006, hanyar photobath don noman babban deuterium DKDP crystal an ƙirƙira shi. A cikin 2015, lu'ulu'u na DKDP tare da deuteration beraio na 98% da girman 100 mm×105 mm×96 mm an yi nasarar girma ta maki-iri Hanyar a Jami'ar Shandong na kasar Sin. Thshine crystal ba shi da wani bayyane macro lahani, kuma ta Refractive index asymmetry kasa da 0.441 ppm. A cikin 2015, fasahar haɓaka da sauriDKDP crystal tare da deuteration beraio na 90% an yi amfani da shi a karon farko a kasar Sin don shiryawa Q-canzakayan abu, yana tabbatar da cewa za a iya amfani da fasahar haɓaka da sauri don shirya 430 mm diamita DKDP electro-optical Q-switching bangaren ICF ta buƙata.

DKDP crystal wanda WISOPTIC ya haɓaka (Deuteration> 99%)

DKDP lu'ulu'u da aka fallasa zuwa yanayi na dogon lokaci zai yi tabarbarewar jiki da nebulization, wanda zai haifar da raguwa mai mahimmanci a cikin ingancin gani da asarar ingantaccen juyi. Sabili da haka, wajibi ne don rufe crystal lokacin shirya wutar lantarki Q-switch. Domin rage hasken haskekan taga mai rufewas na Q-switch da a kan Filayen kristal da yawa, ana yin alluran ruwa mai ma'amala da ma'aunin ma'auni sau da yawa cikin sararin samaniya tsakanin crystal da tagas. Ko da without anti-m shafi, tyana watsawa iya zama ya karu daga 92% zuwa 96% -97% (tsawon tsayin 1064 nm) ta amfani Refractive index matching mafita. Bugu da ƙari, ana amfani da fim ɗin kariya a matsayin ma'aunin tabbatar da danshi. Xionget al. shirya SiO₂ fim din colloidal tare da ayyuka na danshi-hujja da anti-reflectikan. Canjin ya kai kashi 99.7% (tsawon tsayin 794 nm), kuma iyakar lalacewar laser ya kai 16.9 J / cm² (tsawon tsayi 1053 nm, bugun bugun jini 1 ns). Wang Xiaodong et al. shirya a fim mai kariya ta Yin amfani da guduro gilashin polysiloxane. Matsakaicin lalacewar Laser ya kai 28 J/cm² (tsawon tsayi 1064 nm, bugun bugun jini nisa 3 ns), kuma kaddarorin gani sun kasance masu daidaito a cikin muhalli tare da yanayin zafi sama da 90% na watanni 3.

Daban-daban daga LN crystal, don shawo kan tasirin birefringence na halitta, kristal DKDP galibi yana ɗaukar juzu'i mai tsayi. Lokacin da ake amfani da na'urar zobe, tsawon crystal a cikinkatako shugabanci dole ne ya zama mafi girma fiye da crystal’s diamita, don samun daidaitaccen filin lantarki, wanda saboda haka yana ƙarawa haske sha a cikin crystal kuma Sakamakon thermal zai haifar da depolarization at babban matsakaicin iko.

A karkashin bukatar ICF, shirye-shiryen, sarrafawa da fasahar aikace-aikacen DKDP crystal an haɓaka cikin sauri, wanda ke sa DKDP electro-optic Q-switches da za a yi amfani da su sosai a cikin maganin Laser, Laser aesthetics, Laser engraving, Laser marking, kimiyya bincike. da sauran fannonin aikace-aikacen Laser. Duk da haka, rashin ƙarfi, hasara mai girma da rashin iya yin aiki a cikin ƙananan zafin jiki har yanzu ƙullun ƙullun ne waɗanda ke hana aikace-aikacen lu'ulu'u na DKDP.

DKDP Pockels cell wanda WISOPTIC yayi