The Melles Griot 05-STP-910-462 is a stabilized Helium-Neon laser operating at 632.8 nm in the red region of the visible spectrum. This CW laser delivers 0.5–0.95 mW of output power in a TEM00 spatial mode with exceptional frequency and power stability, making it ideal for precision optical metrology and reference applications. The system integrates a laser head in a rugged aluminum enclosure with internal ballast resistor and electrical wiring. Frequency stability is held to ±1.0 MHz over 1 minute, ±2.0 MHz over 1 hour, and ±3.0 MHz over 8 hours, with stabilization time under 5 minutes. Power stability reaches ±0.2% across all specified intervals. The laser produces a collimated beam with 0.48 mm diameter (1/e²) and 1.70 mrad divergence (1/e²). Randomly polarized and linearly polarized (>500:1 extinction ratio) output options are available. RMS noise is <0.5% across the 30 Hz to 10 MHz bandwidth, with 0.1% noise in the 30 Hz to 10 MHz region. Temperature-dependent frequency drift is 0.5 MHz/°C. Bore-sight error remains below 1 mrad. The unit operates from a separate 05-LPL series power supply and complies with CDRH Class II and IEC Class 2 safety standards.
Technical Specifications
• Wavelength: 632.8 nm
• Output Power (CW): 0.5–0.95 mW
• Beam Diameter (1/e²): 0.48 mm
• Far-Field Divergence (1/e²): 1.70 mrad
• Transverse Mode: TEM00
• Frequency Stability: ±1.0 MHz (1 min) / ±2.0 MHz (1 h) / ±3.0 MHz (8 h)
• Stabilization Time: <5 minutes
• Power Stability: ±0.2% (1 min/1 h/8 h)
• Noise (RMS): <0.5% (0.1% at 30 Hz–10 MHz)
• Temperature Coefficient (Frequency): 0.5 MHz/°C
• Bore-Sight Error: <1 mrad
• Operating Temperature: 4°C to 40°C
• Input Voltage: 100 VAC ±10% (115 VAC or 230 VAC options available)
• Input Frequency: 50–60 Hz
• Cable Length: 1.8 m
• Housing: Aluminum
• Dimensions: 259.1 mm (L) × 176.8 mm (Ø)
• Shock Resistance: 25 G for 11 msec
– Key Features
• Actively stabilized frequency output for optical reference applications
• Low-noise performance across audio to RF frequencies
• Dual polarization capability
• Class II laser safety compliance
• Compact, rugged construction
– Typical Applications
• Wavelength meter calibration and optical frequency reference
• Precision alignment and metrology
• Research and educational optics
• Component testing
– Compatibility & Integration
Requires external 05-LPL series power supply unit for operation.
