Cylindrical Diode
Cylindrical Diode

SureLock™ 633 nm Wavelength Stabilized Laser Diode

Coherent’s 633 nm High-Power Wavelength Stabilized Laser is a high-power, single frequency, collimated laser packaged in an ultra-compact, TO-can footprint, designed for HeNe replacement applications. The high operating power, narrowed linewidth, low power consumption, and broad temperature operating characteristics make it ideal for next-generation interferometer and analytical instrument designs, with 10x the power and 1/100th the size of a comparable HeNe laser. 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.

633 nm Single Frequency, Collimated

TO-Can Laser for Instrumentation

Specification Summary

Parameter Symbol Min Typ Max Unit
Output Power Po 40/70 mW
Center Wavelength P 632.5 632.9 633.25 nm
Linewidth Δλ 150MHz 0.06nm
Central Stabilized Temperature Tc 15 25 35 °C
Stabilized Temperature Range Tr 10 °C

SureLock™ Specifications

Operating Specifications

Parameter Symbol Min Typ Max Unit
Threshold Current Ith 64 80 mA
Operating Current Iop 160 210 mA
Operating Voltage Vop 2.8 3.0 V
Beam Divergence, Perpendicular Qv <2 mrad
Beam Divergence, Parallel Qh <2 mrad
Differential Efficiency DE (dP/dI) 0.7 mW/mA
Operating Temperature2 Top 0 35 °C
Storage Temperature2 Ts -10 60 °C
Polarization 100:1
Polarization Orientation TE

SureLock™ Operating Specifications

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



HeNe Replacement
Raman Spectroscopy
Flow Cytometry
Data Storage
Confocal Microscopy
Particle Counting
Nondestructive Testing

Features & Benefits

  • Compact 9 mm TO can footprint
  • Narrow spectral linewidth <20 MHz typical, 150 MHz maximum
  • Collimated output beam
  • Wavelength stability across operating range <0.01 nm/°C
  • Test Data provided with every laser
  • Narrow-band ASE filters available

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Risk factors: Except for the historical information contained here, many of the matters discussed in this Web site are forward-looking statements, based on expectations at the time they were made, that involve risks and uncertainties that could cause our results to differ materially from those expressed or implied by such statements. These risks are detailed in the “Factors That May Affect Future Results” section of our latest 10-K or 10-Q filing. Coherent assumes no obligation to update these forward-looking statements.

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