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高精度,高可靠性原子钟用795nm,850nm,894nm垂直腔面发射激光器(VCSEL激光器)!
关键词:原子钟,atomic clock,VCSEL,795nm VCSEL,850nm,VCSEL,894nm VCSEL 垂直腔面发射激光器,原子钟用垂直腔面激光器,铷原子钟,铯原子钟,磁力仪,频率标准
美国VIXAR公司795nm,850nm,894nm垂直腔面发射激光器(VCSEL)可以实现但横模输出,适用于铷原子钟,铯原子钟,频率标准,磁力仪等方向。可靠性好,可选各种封装,包括TO-4,TO-5,PLCC-2,裸片等。可以内置TEC,是原子钟等仪器的优质选择。
Parameter | Symbol | Units | Minimum | Typical | Maximum | Notes |
Maximum DC current (CW) | mA | -- | -- | 2 | To remain single-mode | |
Threshold current | Ith | mA | 0.6 | 0.75 | 0.9 | |
Operating voltage | Vf | Volts | -- | 2.1 | 3 | |
Series resistance (VCSEL) | Rs | Ohms | 150 | 175 | 300 | |
Slope efficiency | SE | mW/mA | -- | 0.12 | -- | |
Optical output power | Lop | mW | 0.06 | 0.1 | 0.17 | In single mode. T=85°C |
Optical output power | Lop | mW | 0.1 | -- | 0.25 | In single mode. T=25°C |
Optical output power | Lop | mW | 0.04 | 0.08 | 0.16 | In single mode. T=95°C |
Reverse breakdown voltage | V | 10 | -- | -- | Ir ≤ 1nA | |
Operating wavelength | λop | nm | 794.5 | 795 | 795.5 | |
Side Mode Suppression Ratio | SMSR | dB | 20 | -- | -- | Unmodulated. |
Spectral line width | Δλ | MHz | -- | -- | 100 | Unmodulated. |
Polarization extinction ratio | PER | dB | 16 | -- | -- | 0.25mA < if="">< 2ma="" (note=""> |
Beam divergence 1/e2 | deg | -- | 15 | -- | Whole angle | |
Beam divergence FWHM | FWHM | deg | -- | 9 | -- | Whole angle |
Wavelength current coefficient | nm/mA | -- | 0.42 | 0.6 | ||
Wavelength temp. coefficient | nm/°C | -- | 0.055 | 0.061 | ||
Rise time | ps | -- | -- | 100 | 20%-80% | |
Fall time | ps | -- | -- | 100 | 20%-80% | |
Modulation bandwidth (-3 dB) | BW | GHz | 4 | -- | -- | |
ESD Survival | V | 1000 | -- | -- | (Notes 3, 5) |