自由空間聲光器件2
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- 公司名稱 上海宇行健光電科技有限公司
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- 更新時間 2024/3/14 22:27:03
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IntroductiontoAcousto-OpticsTechnologyAcousto-Opticdevicesareusedinlaserequipmentforelectroniccontroloftheintensityandpositionofthelaserbeam
Introduction to Acousto-Optics Technology
Acousto-Optic devices are used in laser equipment for electronic control of the intensity and position of the laser beam. In this note, we will explain the theory and application of acousto-optic modulators.
Acousto-optic interaction occurs in all optical mediums when an acoustic wave and a laser beam are present and interact with each other. When an acoustic wave is launched into the optical medium, it generates a refractive index wave that behaves like a sinusoidal grating. An incident laser beam passing through this granting will be diffracted into several orders. With appropriate design, the first order beam has the highest efficiency. Its angular position is linearly proportional to the acoustic frequency, so that the higher the frequency, the larger the diffracted angle.
Where, λ, is the optical wavelength in air, fa, is the acoustic frequently, and , Va is the acoustic velocity, and Q, is the angle between the incident laser beam and the diffracted laser beam.
A diagram of the angular relationship between the acoustic wave and the laser beams is n in Figure 1.
The intensity of light diffracted (deflected) is proportional to the acoustic power (Pac), the material figure of merit (M2 ), geometric factors (L/H) and inversely proportional to the square of the wavelength.
With acousto-optics, both the deflection as well as the modulation of the amplitude of the optical beam are possible. Also, in the acousto-optic interaction, the laser beam frequency is shifted by an amount equal to the acoustic frequency. This frequency shift can be used for heterodyne detection applications, where precise phase information is measured.
聲光技術(shù)及AOM介紹文件
https://pan..com/s/17kbsu19U0PkxoBTkjqPV1A (提取碼:ji4c)
Model #AMM-100-8-70-1550 | |
波長 | 1550 nm |
基底 | Amtir |
光功率密度 | 3 W/mm2 |
中心頻率 | 100 MHz |
射頻帶寬 | 10 MHz |
有效孔徑 | 0.3 mm |
光直徑 | 0.2 mm |
上升時間 | 70 ns |
數(shù)字調(diào)制帶寬 | 8 MHz |
布拉格角 | 31 mrad |
分離角 | 62 mrad |
聲波速度 | 2.52E+03 |
射頻功率 | <1.0 W |
透光率 | >95% |
衍射效率 | ~80% |
輸入阻抗 | 50 ohms |
V.S.W.R. | 2.1:1 |
光偏振態(tài) | Random |
Model # QZF-200-100-370 | |
波長范圍 | 370nm |
頻移 | 200MHz |
射頻帶寬 | 100MHz |
有效孔徑 | 0.3 mm |
光傳輸 | > 98 % |
衍射效率 | ~65% (at ~2.5W RF Power) |
布拉格角 | 6 mrad |
分離角 | 12 mrad |
聲波速度 | 5.96 E+3 m/sec |
射頻功率 | ~2.5 W |
輸入阻抗 | 50ohms |
V.S.W.R | 2:1 |
光的偏振 | Linear |
射頻連接器 | SMA |
Model # TEF-362-50-795 | |
波長范圍 | 795nm |
頻移 | 362MHz |
射頻帶寬 | 50MHz |
有效孔徑 | 0.3 mm |
光傳輸 | > 98 % |
衍射效率 | 50-60% |
布拉格角 | 32 mrad |
分離角 | 64 mrad |
聲波速度 | 4.2E+3 m/sec |
射頻功率 | ~2 W |
輸入阻抗 | 50ohms |
V.S.W.R | 2:1 |
光的偏振 | Linear (Vertical or Horizontal) |
射頻連接器 | SMA |
Model # TEF-600-400-689 | |
波長范圍 | 689nm |
頻移 | 600MHz |
射頻帶寬 | 400MHz |
有效孔徑 | 0.075 mm |
光傳輸 | > 95 % |
衍射效率 | 40~45% |
布拉格角 | 49 mrad |
分離角 | 98 mrad |
射頻功率 | ~1 W |
輸入阻抗 | 50ohms |
V.S.W.R | 2:1 |
光的偏振 | Linear |
射頻連接器 | SMA |
Model # GPF-1000-200-780 | |
基板 | GaP |
波長范圍 | 780nm |
頻移 | 1000MHz |
射頻帶寬 | 200MHz |
有效孔徑 | 0.075mm |
光傳輸 | >80% |
衍射效率 | ~25% |
波前畸變 | l/10 |
布拉格角 | 62mrad |
分離角 | 124mrad |
聲波速度 | 6.31E+3 m/s |
射頻功率 | ~1W |
輸入阻抗 | 50ohms |
V.S.W.R | 3:01 |
光的偏振 | Linear (horizontal) |
射頻連接器 | SMA |
Model # TEF-1500-100-795 | |
基板 | TeO2 |
波長范圍 | 795nm |
頻移 | 1500MHz |
射頻帶寬 | 100MHz |
有效孔徑 | 0.075mm |
衍射效率 | 15-20% |
布拉格角 | 142mrad |
分離角 | 284mrad |
聲波速度 | 4.2E+3 m/s |
射頻功率 | 1.0 W |
輸入阻抗 | 50ohms |
V.S.W.R | 2:1 |
光的偏振 | Linear (horizontal or vertical) |
射頻連接器 | SMA |
Model # GPF-1500-200-780 | |
數(shù)據(jù) | 780 nm |
基底 | GaP |
光功率密度 | 100 W/mm2 |
光傳輸 | >80% |
移頻偏移 | 1500 MHz |
射頻帶寬 | 200 MHz |
活動直徑 | 0.075 mm |
布拉格角 | 93 mrad |
夾角 | 186 mrad |
聲速度(米/秒 ) | 6.31E+03 |
射頻功率(瓦特) | 1 W |
衍射效率 | ~30% |
輸入阻抗 | 50 ohms |
電壓駐波比 | 2:01 |
光學偏振 | Linear |
類型 | Air-cooled |
Model # GPF-1700-200-795 | |
基底 | GaP |
波長范圍 | 795nm |
頻移 | 1700MHz |
射頻帶寬 | 200MHz |
有效孔徑 | 0.075mm |
光傳輸 | >80% |
衍射效率 | ~30% |
波前畸變 | l/10 |
布拉格角 | 107mrad |
分離角 | 107mrad |
聲波速度 | 6.31E+3 m/s |
射頻功率 | 1W |
輸入阻抗 | 50ohms |
V.S.W.R | 2.1:1 |
光的偏振 | Linear (horizontal) |
射頻連接器 | SMA |
Model#GPF-3400-100-795 | |
基板 | GaP |
波長范圍 | 795nm |
頻移 | 3400MHz |
射頻帶寬 | 100MHz |
有效孔徑 | 25mm |
光傳輸 | >80% |
衍射效率 | ~1% |
波前畸變 | l/10 |
布拉格角 | 212mrad |
分離角 | 424mrad |
聲波速度 | 6.31E+3 m/s |
射頻功率 | ~1W |
輸入阻抗 | 50ohms |
V.S.W.R | 0.125694444 |
光的偏振 | Linear |
射頻連接器 | SMA |
Model #AMM-100-8-70-1550-2FP | |
波長 | 1550 nm |
光學范圍 | 130 mW (C.W) |
中心頻率 | 100 MHz |
數(shù)字調(diào)制帶寬 | 8 MHz |
有效孔徑 | 0.3 mm |
晶體內(nèi)束直徑 | 0.2 mm |
上升時間 | 70 ns |
布拉格角 | 31 mrad |
分離角 | 62 mrad |
聲波速度 | 2.50E+03 |
射頻功率 | 1.0 W |
光傳輸 | >95% |
輸入阻抗 | 50 ohms |
V.S.W.R. | 2.1:1 |
光偏振態(tài) | Random (Option: Linear with PM fiber) |
Case Type | 2 Port Fiber Optically Pigtailed |
光纖類型 | 9 m core, 125 m cladding Single Mode |
光纖連接頭 | FC |
拋光的光纖末端 | APC |
光纖長 | 1 m |
纖維夾套 | 900 mm OD |
背反射 | 50-60 dB |
插損 | 2.5-3.5 dB |
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