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原子鐘VCSEL激光器
美國VIXAR公司795nm，850nm，894nm垂直腔面發射激光器（VCSEL）可以實現但橫模單縱模輸出，適用于銣原子鐘，銫原子鐘，頻率標準，磁力儀等方向。
原子鐘VCSEL激光器
可靠性好，可選各種封裝，包括TO-4，TO-5，PLCC-2，裸片等。可以內置TEC，是原子鐘等儀器的*選擇。
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 4) |
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) |
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