ZFA-V-640 – Diode Laser at 640 nm
The ZFA-V-640 long coherent length diode laser at 640 nm is a high-precision continuous-wave (CW) laser source designed for advanced scientific research, spectroscopy, and industrial optical systems. With a coherence length exceeding 1 meter and output power up to 30 mW, this laser delivers exceptional optical coherence, wavelength stability, and beam quality for precision measurement applications. Operating at a stable wavelength of 640 nm ±5 nm, the laser provides a high-quality near TEM00 Gaussian beam profile with excellent spatial coherence and low divergence (<1.5 mrad). Its superior beam quality (M² <1.5) ensures accurate beam focusing, minimal distortion, and reliable performance in interferometric and spectroscopic systems. This diode laser is widely used in Raman spectroscopy, fluorescence excitation, holography, laser radar, and optical metrology, where high coherence and beam stability are essential.
- Long coherent length exceeding 1 meter for interferometry and holography
- Stable wavelength at 640 nm ±5 nm
- Output power up to 30 mW for scientific and industrial applications
- 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 optical alignment
- High polarization ratio >50:1 (optional >100:1)
- Fast warm-up time (<5 minutes)
- Raman spectroscopy
- Optical interferometry
- Holography and interferometric imaging
- Fluorescence microscopy and excitation
- Flow cytometry and biomedical instrumentation
- DNA sequencing systems
- Laser radar (LIDAR) and optical sensing
- Precision optical metrology
- Semiconductor inspection and analysis
| Parameter | Specification |
|---|---|
| Model | ZFA-V-640 |
| Central wavelength | 640 ± 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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