TO Series Wavelength Stabilized TO Can Lasers
TO Series Wavelength Stabilized TO Can Lasers

SureLock™ 658 nm Wavelength Stabilized Laser Diode

Coherent’s 658 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.

658 nm Single Mode, Single-Frequency

TO-Can Laser for Instrumentation

Specification Summary

Parameter Symbol Min Typ Max Unit
Output Power Po 35 mW
Center Wavelength1 LP 655 656 657 nm
657 658 659 nm
659 660 661 nm
Linewidth Δλ 300 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 50 mA
Operating Current Iop 65 85 mA
Operating Voltage Vop 2.4 2.8 V
Laser Reverse Voltage Vrl 2 V
Photodiode Reverse Voltage Vrl 30 V
Monitoring Output Current Im 0.3 0.5 0.7 mA
Beam Divergence, Perpendicular Qv 12 16 20 Degrees
Beam Divergence, Parallel Qh 7 10 13 Degrees
Off Axis Angle, Perpendicular dQv -3 3 Degrees
Off Axis Angle, Parallel dQh -3 3 Degrees
Emitter Size 1 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



• Raman Spectroscopy
• HeNe Replacement
• Metrology
• Sensing
• Bio-instrumentation
• Analytical Instrumentation
• Graphic Arts

Features & Benefits

  • Single frequency performance
  • Narrow linewidth <300 MHz
  • Wavelength stability <0.015 nm/°C
  • Coherence length >2 m</0.015 nm>
  • Compact, hermetically sealed TO footprint
  • Narrow-band ASE filters available

Related Materials