Ojiji nke Laser Semiconductor nke Otu Ugboro na Nha Ziri Ezi nke Mgbochi Ebili Mmiri

Ojiji nkeLaser Semiconductor nke otu ugboroNtụle Ziri Ezi nke Mgbochi Ebili Mmiri
Ngwa nke otu ugborolaser semiconductorA na-atụle n'ọhịa nha ziri ezi dịka eriri optic hydrophones na interferometers ntị ala, a na-enyochakwa mmetụta dị mkpa nke arụmọrụ laser na arụmọrụ nke sistemụ interferometer n'ụzọ miri emi.

Isi nhazi na ụkpụrụ ọrụ nke sistemụ ahụ: Sistemụ hydrophone eriri optic bụ isi ihe mejupụtara isi mmetụta na interferometer (na-ewere interferometer MZ dị ka ihe atụ). Isi ihe dị mkpa bụ na akara ụda (nrụgide ụda Δ p) na-arụ ọrụ na isi mmetụta, na-akpata mgbanwe na ogologo na index refractive nke eriri mmetụta nke gbara gburugburu silinda oghere ahụ, si otú a na-ewebata mgbanwe na ụzọ anya. A na-achọpụta obere mgbanwe ụzọ anya a (ya bụ, mgbanwe nkebi) site na interferometer.

1. Isi ihe mmetụta: Isi ọrụ ya bụ ịgbanwe ụda mkpọtụ ka ọ bụrụ mgbanwe na ụzọ anya nke interferometer. Ihe mmetụta s metụtara ihe ndị dị ka ogologo eriri L, eriri mmetụta ogologo bara uru maka imeziwanye mmetụta sistemụ.
2. Interferometer: Ọ bụ "ngwa agha kachasị mma" maka ịchọpụta obere mgbanwe nkebi. Ike ọkụ mmepụta nwere mmekọrịta cosine na ọdịiche nkebi. Site n'ịkwụsi ike nkebi static bias φ ₀ na ebe ọrụ orthogonal ((m+1/2) π), sistemụ ahụ nwere ike nweta mmetụta nchọpụta kachasị elu.
3. Isi ihe dị mkpa nke isi iyi ọkụ nke na-emetụta arụmọrụ sistemụ: Isiokwu a lekwasịrị anya n'inyocha oke arụmọrụ laser na iru mkpebi dị elu (na ebumnuche nke ≤ 1 μ rad).
4. LaserMkpọtụ ugboro na obosara ahịrị: Mkpọtụ ugboro nke laser nwere ike ibute mkpọtụ nke oge nnyonye anya, si otú a belata visibiliti nke akụkụ nnyonye anya. Maka interferometer nwere ọdịiche ụzọ anya nke ihe dị ka mita 1, iji nweta mkpebi nke usoro nke 1 μ rad, obosara ahịrị nke laser kwesịrị ịdị ihe na-erughị ihe dị ka 30 Hz. Nke a bụ ihe dị oke mkpa maka nkwụsi ike ugboro nkeisi iyi ọkụ.
5. Mkpọtụ ike laser: A ga-agbanwe mkpọtụ ike dị n'etiti laser (RIN) ozugbo ka ọ bụrụ njehie nke akara nnyonye anya. Iji nweta mkpebi nke 1 μ rad na ike ọkụ nchọpụta nkịtị (~ 100 μ W), RIN nke laser kwesịrị ibelata ruo n'okpuru -120 dB. Nke a bụ ihe dị oke mkpa maka nkwụsi ike nke ike isi iyi ìhè.

Na nchịkọta, site na inyocha sistemụ hydrophone eriri optic, a na-akọwapụta ihe ndị siri ike achọrọ maka isi iyi ọkụ - laser semiconductor ugboro otu - n'ihe gbasara oke ahịrị dị warara (nkwụsi ike ugboro dị elu) na mkpọtụ ike dị oke ala na nha ziri ezi dabere na ụkpụrụ nnyonye anya, a na-egosikwa ihe ịma aka nkwụsi ike ugboro laser na-eche ihu na ngwa sistemụ buru ibu.