Narrow Linewidth Semiconductor Laser
Narrow Linewidth Semiconductor Laser uses ultra-narrow linewidth external cavity semiconductor laser chip, outputs single longitudinal mode laser with wavelength of 1550nm, spectral linewidth is less than 100kHz, and single mode or polarization-maintaining fiber is coupled for output, providing module or table model package. It is a cost-effective laser source for distributed sensing.
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Features |
Applications |
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n Spectral linewidth ≤100KHz |
n lidar |
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n DFB resonant cavity |
n Acoustic sensing, hydrophone |
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n Wavelength stable without mode hopping |
n Fiber distributed sensing |
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Optical index |
Unit |
Typical value |
Notes |
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operating wavelength |
nm |
1550±1 |
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|
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Spectral linewidth@3dB |
kHz |
≤100 |
*3dB linewidth =20dB linewidth /20 |
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Side Mode Suppression Ratio |
dB |
≥50 |
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Wavelength instability |
MHz |
≤±100 |
@8h |
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working model |
- |
CW |
CW lasers |
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output power |
mW |
30 |
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|
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Short-term stability (15 minutes) |
dB |
≤ ±0.02 |
Equivalent ≤±0.5% |
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Long-term stability (8 hours) |
dB |
≤ ±0.05 |
Equivalent ≤±1.2% |
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Polarization state |
- |
Random polarization |
linear polarization |
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Tail fiber type |
- |
SMF-28 |
PM1550 |
FC/APC |
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Electrical and environmental parameters |
table model |
module |
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Control mode |
Button/RS232 serial communication |
RS232 serial communication |
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communications interface |
DB9 Female |
DB9 Female |
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Power |
100~240V AC, <30W |
5V DC, <15W |
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Size |
260(W)×280(D)×120(H)mm |
70(W)x90(D)x15(H)mm |
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operating temperature range |
-5~+35°C |
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Operating humidity range |
0~70% |
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NLSL |
operating wavelength(nm) |
output power(mW) |
Output pigtail type |
package |
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|
1550 |
20/50/100 |
SM=SMF-28 PM=PM1550 |
B=table model M=module |
