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）可以实现但横模单纵模输出，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，是原子钟等仪器的最佳选择。
|
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 4) |
|
Beam pergence 1/e2 |
|
deg |
-- |
15 |
-- |
Whole angle |
|
Beam pergence 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) |
