
Coherent’s 690 nm Wavelength Stabilized Laser Diode is a single mode, single-frequency laser packaged in an ultra-compact TO-can footprint. The extremely narrow linewidth, broad temperature operating characteristics, and low power consumption deliver affordable, portable instrument-quality performance for a broad range of instrumentation applications. All SureLock™ Series lasers are stabilized using the Coherent PowerLocker® Volume Holographic Grating, ensuring precise, ultra-stable center wavelengths, low temperature dependence, and consistent optical performance over the locked region.
Specification Summary
Parameter | Symbol | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Output Power | Po | – | 45 | – | mW |
Center Wavelength(vacuum)1 | LP | 688 | 689 | 690 | nm |
690 | 691 | 692 | nm | ||
Linewidth | Δλ | – | 100 | – | MHz |
Central Stabilized Temperature | Tc | 15 | – | 40 | °C |
Stabilized Temperature Range | Tr | 10 | 15 | – | °C |
SureLock™ Specifications
1Please specify wavelength at time of order
Operating Specifications
Parameter | Symbol | Min | Typ | Max | Unit |
---|---|---|---|---|---|
Threshold Current | Ith | – | 30 | 60 | mA |
Operating Current | Iop | – | 75 | 120 | mA |
Operating Voltage | Vop | – | 2.3 | 3 | V |
Laser Reverse Voltage | Vrl | – | – | 2 | V |
Monitoring Output Current | Im | 0.08 | 0.15 | 0.35 | MA |
Beam Divergence, Perpendicular | Qv | 18 | 21 | 25 | Degrees |
Beam Divergence, Parallel | Qh | 7 | 9 | 12 | Degrees |
Emitter Size | – | 2 x 3 | µm | ||
Differential Efficiency | DE (dP/dI) | 1.1 | mW/mA | ||
Operating Temperature2 | Top | 0 | – | 50 | °C |
Storage Temperature2 | Ts | -10 | – | 60 | °C |
Polarization | – | – | 100:1 | – | – |
Polarization Orientation | – | – | TE | – | – |
Table 2: SureLock™ Operating Specifications
2Non-Condensing
All specifications are at rated power with a case temperature of 25°C unless otherwise noted