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780.241 nm DBR Laser Diode
The 780.241 nm Distributed Bragg Reflector (DBR) high-performance edge-emitting laser diode adopts advanced monolithic integrated single-frequency Gallium Arsenide (GaAs) laser technology.This series of devices outputs single spatial mode laser beams, with passivated facet design for superior operational reliability. Specially designed for rubidium (Rb) atomic spectroscopy applications, the laser has passed spectral certification, which can stably and precisely cover the D2 transition spectral line of rubidium within a temperature range of room temperature ±10 °C.
Product features:Precise matching with atomic energy level transition;Ultimate spectral performance;Excellent output power and beam quality
Part Number:MP-DBR-780.241-60-14BF-PA
Application area:Atomic Physics & Quantum Technology | Precision Measurement & Sensing
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Center Wavelength
780.241nm

Detailed parameters

780.241nm (COS) package characteristics
Chip architecture | |||
Parameter 1 | HOT3(High operating temperature) | Low power | High power |
Nominal wavelength (nm)2 | 780.241 ± 0.6 | ||
Power range (mW) | 10–30 | 40–80 | 80–180 |
Maximum Operating Current (CW & Pulsed) (mA) | 80 | 140 | 250 |
Optical power at maximum operating current (mW) | 30 | 80 | 180 |
Nominal Slope Efficiency (W/A) | 0.6 | 0.9 | 0.85 |
Nominal threshold current (mA) | 30 | 40 | 60 |
1. Unless otherwise noted, all parameters are measured at a junction temperature of 25°C. If used outside of these parameters, the warranty will be void
2. The sealed package may contain a chip-on-substrate (CoS) with a deviation of ±1.2 nm from the nominal value.
3. High temperature characteristics are specified at 65 degrees Celsius.
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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