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894.592nm DBR Laser Diode
The 894.592nm DBR series high-performance edge-emitting laser diodes are fabricated based on advanced monolithic single-frequency gallium arsenide (GaAs) laser technology. This series of lasers delivers a single transverse mode beam output and adopts facet passivation technology to ensure reliability. The 894.592nm DBR devices are dedicated to cesium (Cs)-based atomic spectroscopy applications. The series is spectrally certified to guarantee accurate tuning to the cesium D1 transition line within an ambient temperature range of ±10°C around room temperature.
Product features:Monolithically integrated DBR structure;diffraction-limited beam output
Part Number:MP-DBR-894.592-240-14BF-PA
Application area:Atomic Sensing and Quantum Technology | Pump Source for Fiber Lasers and Amplifiers | Laser Spectroscopy and Sensing
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Center Wavelength
894.592nm

Model Parameters
Detailed parameters

894.592nm (COS) package characteristics
Chip architecture | ||
Parameter 1 | Low power | High power |
Nominal wavelength (nm)2 | 894.592 ± 0.6 | |
Power range (mW) | 40–120 | 80–240 |
Maximum Operating Current (CW & Pulsed) (mA) | 160 | 350 |
Optical power at maximum operating current (mW) | 120 | 240 |
Nominal Slope Efficiency (W/A) | 0.85 | 0.9 |
Nominal threshold current (mA) | 40 | 50 |
1. Characteristics at TC = 25 °C unless otherwise specified. Operating outside of these parameters voids warranty.
2. Hermetically sealed packages may contain CoS that are ± 1.2 nm from nominal
Available free-space package add-ons

Laser specifications
Parameters | unit | Minimum | Typical values | Maximum |
Storage temperature | °C | 0 | - | 70 |
Shell operating temperature | °C | 5 | - | 70 |
Laser chip operating temperature ¹ | °C | 5 | - | 45 |
Laser series resistance | Ω | - | 2 | - |
Forward voltage of the laser at LIV current | V | - | 2 | - |
Nominal laser line width at LIV current | kHz | - | 500 | - |
Beam divergence angle at half-height and full width (θ|| × θ⊥) | º | - | 6 x 28 | 8 x 32 |
Edge-mode rejection ratio (SMSR) | dB | - | -40 | - |
Polarization extinction ratio | dB | -17 | -20 | - |
Polarized state of the laser | TE | |||
Pattern structure | Fundamental mode | |||
Temperature tuning rate | nm/°C | - | 0.06 | - |
Current tuning rate | nm/mA | - | 0.002 | - |
Laser reverse voltage | V | - | - | 0 |
If not sealed, it is not recommended to use below the dew point
Freespace Encapsulation add-on specifications
Parameters | unit | Minimum | Typical values | Maximum |
Photodiode forward current | mA | - | - | 10 |
Photodiode reverse voltage | V | - | - | 50 |
TEC Current (TOSA) | A | -1.1 | - | 1.1 |
TEC Voltage (TOSA) | V | -3.0 | - | 3.0 |
TEC current TO-8 | A | -1.8 | - | 1.8 |
TEC voltage TO-8 | V | -2.2 | - | 2.2 |
Thermistors | kΩ | - | 10 | - |
Handling Precautions
These devices are sensitive to ESD. When handling the module, grounded work area and wrist strap must be used. Always store in an antistatic container with all leads shorted together.



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