ZFA-V-642 – Diode Laser at 642 nm
The ZFA-V-642 long coherent length diode laser at 642 nm is a precision-engineered continuous-wave (CW) laser designed for demanding scientific, biomedical, and industrial optical applications. Featuring excellent wavelength stability, long coherence length exceeding 1 meter, and output power up to 30 mW, this laser delivers exceptional performance in high-resolution optical measurement systems. With a stable central wavelength of 642 nm ±5 nm and near TEM00 transverse mode operation, the laser produces a high-quality Gaussian beam with excellent spatial coherence and beam uniformity. Its superior beam quality (M² <1.5) and low beam divergence (<1.5 mrad) ensure precise focusing, accurate measurements, and reliable system integration.
Features
- Long coherent length exceeding 1 meter for interferometric applications
- Stable wavelength at 642 nm ±5 nm
- Output power up to 30 mW
- Near TEM00 Gaussian beam profile for superior spatial coherence
- Excellent beam quality with M² factor <1.5
- High power stability down to <1% RMS over 4 hours
- Low beam divergence (<1.5 mrad) for precise beam control
- High polarization ratio >50:1 (optional >100:1)
- Fast warm-up time under 5 minutes
Applications
- Raman spectroscopy
- Optical interferometry and interferometric measurement
- Fluorescence excitation and microscopy
- Holography and optical imaging
- Flow cytometry and biomedical analysis
- DNA sequencing instrumentation
- Laser radar (LIDAR) systems
- Precision optical metrology
- Semiconductor inspection and optical testing
Specifications
| Parameter | Specification |
|---|---|
| Model | ZFA-V-642 |
| Central wavelength | 642 ± 5 nm |
| Operating mode | Continuous Wave (CW) |
| Output power | >1 mW up to 30 mW |
| Power stability (RMS, 4 hours) | <3%, <2%, <1% |
| Transverse mode | Near TEM00 |
| Coherent length | >1 meter |
| Beam quality (M² factor) | <1.5 |
| Beam diameter at aperture | ~2.0 mm |
| Beam divergence (full angle) | <1.5 mrad |
| Polarization ratio | >50:1 (>100:1 optional) |
| Polarization orientation | Horizontal ±5° (Vertical optional) |
| Warm-up time | <5 minutes |
| Beam height from base plate | 30 mm |
| Operating temperature | 20 °C to 30 °C |
| Power supply | QDI-S-F (100–240 VAC) |
| Expected lifetime | 10,000 hours |
| Warranty | 1 year |
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