Nm laser diode small size

Compact laser diodes are available in sizes as small as 3.3 mm, offering a range of wavelengths and integrated modules suitable for portable and precision applications.Compact Laser Diode OptionsTO-Can Packaged Diodes: Standard TO-can packages are available in diameters of 3.8 mm, 5.6 mm, 9 mm, and 9.5 mm, with various pin configurations for easy mounting. These diodes can be temperature-tuned to slightly adjust the lasing wavelength, and some are offered as wavelength-tested units for precise applications (Thorlabs) . Compact LDM Modules: Self-contained laser diode modules integrate the diode, optics, and focusing lens in a small form factor. For example, Edmund Optics offers 1 mW 780 nm LDM modules that are durable, compact, and focusable, suitable for alignment, scanning, robotic control, and measurement applications . Low-Cost OEM Modules: Laser Components provides ultra-small modules with diameters down to 3.3 mm, including 780 nm and 850 nm options. These modules combine the diode, drive electronics, and optics in a metal housing, making them ideal for compact, low-cost applications such as dot or line lasers . Consumer Mini Modules: Small red laser diodes, such as 650 nm modules with 6 mm diameter, are widely available for DIY, educational, or low-power applications. These modules are lightweight, durable, and easy to drive with simple DC circuits .Key ConsiderationsWavelength: Choose based on application; common small-sized diodes include 650 nm (red), 780 nm (near-infrared), and 850 nm.Output Power: Typically ranges from 1 mW to several tens of mW for compact modules.Form Factor: Smaller diameters (3.3–6 mm) are ideal for integration into portable or space-constrained devices.Optics: Some modules include adjustable lenses for elliptical or circular beams, suitable for alignment or scanning tasks.Power Supply: Many compact modules require an external power supply; ensure compatibility with voltage and current ratings. These small-sized laser diodes are widely used in alignment, measurement, scanning, barcode reading, and educational projects, offering flexibility in both wavelength and module size while maintaining compactness and durability.