Product Overview
Vintage Optical Disk–Class Red Laser Diode, TO-Can Package (Unused NOS)
This visible red laser diode provides controlled optical output for legacy optical storage and OEM photonics assemblies. Designed for integration with a proper constant-current driver and feedback, it delivers stable emission in compact optical heads. Practical tip: use an APC driver and solid heat sinking to maintain output stability in nm / mW operation.
Product Condition
Unused, New Old Stock.
Product Overview
The HL6726MG is a Hitachi single-mode red laser diode originally developed for optical disk and precision optoelectronic applications. Housed in a standard metal TO-can, it is intended for closed-loop control using an internal monitor photodiode. The device emits in the deep-red band and is classified as a Class IIIb laser when operated near rated output.
Key Features
- Visible red laser diode for optical disk–class applications
- Nominal emission wavelength 670–685 nm
- Rated optical output around 30 mW continuous wave
- Metal TO-can package suitable for optical mounts
- Single-mode, index-guided laser structure
- Integrated monitor photodiode for feedback control
- Designed for constant-current or APC drive circuits
Applications
- Optical disk and optical storage assemblies
- OEM optoelectronic instrumentation
- Barcode and optical scanning subsystems
- Laboratory optical benches with proper controls
- Legacy laser module repair or replacement
Frequently Asked Questions
Is this a complete laser module?
No. It is a bare laser diode that requires a suitable driver, optics, and thermal management.
What laser safety class applies?
When operated near rated output, it falls within Class IIIb and requires appropriate safety controls.
Does it include a monitor photodiode?
Yes. The TO-can package includes a monitor photodiode for output regulation.
What wavelength range does it emit?
The device operates in the deep-red region, typically specified around 670–685 nm.
You can integrate this diode into an optical head by mounting it in a TO-can holder, connecting an APC laser driver to the monitor photodiode, and aligning optics within a shielded enclosure.
