SureLock™ 690nm Wavelength Stabilized Laser Diode

Ondax’s 690nm 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 Ondax PowerLocker® Volume Holographic Grating, ensuring precise, ultra-stable center wavelengths, low temperature dependence and consistent optical performance over the locked region.


  • Single frequency performance
  • Narrow linewidth <100 MHz
  • Wavelength stability <0.015nm/°C
  • Coherence length >2m
  • Compact, hermetically sealed TO footprint
  • Narrow-band ASE filters available


  • Raman Spectroscopy
  • Metrology
  • Sensing
  • Bio-instrumentation
  • Analytical Instrumentation
  • Graphic Arts
SureLock™ Specifications
Parameter Symbol Min Typ Max Unit
Output Power Po

45 mW
Center Wavelength(vacuum)1 LP 688 689 690 nm
    690 691 692 nm
Linewidth Δλ 100 MHz
Central Stabilized Temperature Tc 15 40 °C
Stabilized Temperature Range Tr 10 15 °C

1Please specify wavelength at time of order

Table 2: SureLock™ Operating Specifications
Parameter Symbol Min Typ Max Unit
Threshold Current Ith 30 60 mA
Operating Current Iop 75 120 mA
Operating Voltage Vop 2.3 3 V
Laser Reverse Voltage Vrl 2 V
Monitoring Output Current Im 0.08 0.15 0.35 MA
Beam Divergence, Perpendicular Qv 18 21 25 Degrees
Beam Divergence, Parallel Qh 7 9 12 Degrees
Emitter Size 2 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

All specifications are at rated power with a case temperature of 25°C unless otherwise noted

Technical Data