SureLock™ 640 nm Wavelength Stabilized Laser Diode
Coherent’s 640 nm Wavelength Stabilized Laser Diode is a single mode, single-frequency laser 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.
640 nm Single Mode, Single-Frequency
TO-Can Laser for Instrumentation
Specification Summary
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Power | Po | – | 32 | – | mW |
| Center Wavelength1 | LP | 639 | 640 | 641 | nm |
| Linewidth | Δλ | – | 150 | – | MHz |
| Central Stabilized Temperature | Tc | 15 | – | 40 | °C |
| Stabilized Temperature Range | Tr | 5 | 10 | – | °C |
Table 1: SureLock™ Specifications
1Please specify wavelength at time of order
Operating Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Threshold Current | Ith | – | 40 | 60 | mA |
| Operating Current | Iop | – | 60 | 80 | mA |
| Operating Voltage | Vop | – | 2.3 | 2.5 | V |
| Laser Reverse Voltage | Vrl | – | – | 2 | V |
| Monitoring Output Current | Im | 0.05 | 0.15 | 0.4 | MA |
| Beam Divergence, Perpendicular | Qv | 25 | 30 | 35 | Degrees |
| Beam Divergence, Parallel | Qh | 6 | 8 | 10 | Degrees |
| Off Axis Angle, Perpendicular | dQv | -2 | – | 2 | Degrees |
| Off Axis Angle, Parallel | dQh | -2 | – | 2 | Degrees |
| Emitter Size | – | 1 x 3 | µm | ||
| Differential Efficiency | DE (dP/dI) | 0.5 | mW/mA | ||
| Operating Temperature2 | Top | 0 | – | 40 | °C |
| Storage Temperature2 | Ts | -10 | – | 60 | °C |
| Polarization | – | – | 100:1 | – | – |
| Polarization Orientation | – | – | TM | – | – |
Table 2: SureLock™ Operating Specifications
2Non-Condensing
All specifications are at rated power with a case temperature of 25°C unless otherwise noted
Applications
Application
• Raman Spectroscopy
• HeNe Replacement
• Metrology
• Sensing
• Bio-instrumentation
• Analytical Instrumentation
• Graphic Arts
• HeNe Replacement
• Metrology
• Sensing
• Bio-instrumentation
• Analytical Instrumentation
• Graphic Arts
Features & Benefits
- Single frequency performance
- Narrow linewidth <150 MHz
- Wavelength stability <0.015 nm/°C
- Coherence length >2 m
- Compact, hermetically sealed TO footprint
- Narrow-band ASE filters available
Related Materials
Documents
Brochures
Extending Raman into the THz Domain