太赫兹源 THz太赫兹光混频发射源（THz photomixer）
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商品描述
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基于光子混频的连续太赫兹辐射具有线宽窄、可调谐范宽、结构简单、室温工作等优点，在太赫兹光谱、传感和成像方面具有广阔的应用前景。
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光子混频原理图
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光混频太赫兹源驱动部分
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● 驱动部分用以产生两束频差在太赫兹范围内的连续激光的光拍
● 内部包含一个分布反馈半导体激光器和一个可调半导体激光器
● 输出功率（持续可调）可达100mW
● 频率调制可达2THz（在1550nm）
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Item
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Spec
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Wavelength region of 2λ
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1550nm band
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2λ difference freq. range
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0－2THz
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Operation mode
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2λ with fix differential frequency mode
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2λ with the difference freq. scanning mode
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Accuracy of 2λ difference freq.
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±1.5GHz(BOL)
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2λ output power
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Port1: high power output (amplified 2λ with EDFA)
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100mW(typ.) (ASE included)
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(modulation output available,mod.Freq.< 1kHz)
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Port2: low power output (2λ without EDFA)
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2λ difference freq.scan
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Step scan
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Digital control using USB IO
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Bias supply for photomixer
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Port 1 ±3.0V (CW, 0-10KHz Modulation)
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photocurrent monitoe available
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Port 2 ±3.0v (Cw)
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photocurrent monitoe available
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PC interface
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USB2.0
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Operating environmen
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15-35℃<90%RH(non-condensing)
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Power supply
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100-240V AC 50-60 Hz <50W
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Outer dimention
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210(W)x88(H)x350(D) mm
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光混频太赫兹源混频器部分
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采用UTC-PD(uni-traveling-carrier photodiode)的混频器，它在GHz频段拥有较高的饱和电流和线性度，相比pin-PD和LT-GaAs能输出更高功率的THz波， 如下图所示。
提供两种输出方式的混频器供用户选择：
● 波导耦合混频器 W-, F-, D- 和 J-波段均适用
● 天线集成混频器 含频段范围0.2 ~ 1.8THz的蝶形对数周期天线
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技术参数
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Type
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Frequency
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Min
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Center
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Max
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Unit
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Output Power
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Min
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Typ
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Unit
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波导耦合混频模块
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75
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90
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110
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GHz
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90
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115
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140
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GHz
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110
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140
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170
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GHz
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280
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330
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380
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GHz
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-8
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-5
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dBm
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-8
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-5
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dBm
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-9
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-6
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dBm
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-18
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-11
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dBm
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天线继承混频模块
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