SemiNex lasers use high precision indium phosphide semiconductor materials to convert electrical energy directly and efficiently into coherent optical energy.  SemiNex’s proprietary material structure uses a non-conventional doping profile and a unique application of quantum physics that provide superior performance in the areas of:

1. Thermal efficiency
2. Electrical efficiency
3. Total optical power

Electrical efficiency gains are achieved by ensuring less current leakage around the semiconductor quantum wells where electron energy is converted to photonic energy.  Higher electrical efficiency, in turn, reduces the heat buildup caused by lost electrons.   In addition, the unique design of SemiNex lasers minimizes thermal resistance; thus, the heat generated from the diode is easy to dissipate.  Lower heat generation significantly raises the optical power at which the laser can operate.  The combination of higher electrical and thermal efficiency allows SemiNex lasers to achieve power levels which exceed current industry performance by 2 to 6 times. (See graph).

SemiNex laser devices consist of a single semiconductor laser chip fiber-coupled into 50um, 100um or 200um fiber yielding high optical powers in continuous wave operation.  The lasers can be packaged in a hermetic module, which includes a thermal electric cooler and a thermistor (pictured above).  This package offers a modular laser unit that is robust and easy to integrate into laser systems.  SemiNex also sells chips in uncooled packages or in chip-on-submount or bar-on-submount form to meet specific customer needs.

SemiNex lasers are designed to operate at wavelengths between 1300nm and 1600nm. SemiNex uses a material and structure design that is capable of efficiently delivering high power levels at this very broad wavelength range. This is well suited for several applications, including:

Wavelength (nm)	Market	Primary Uses	SemiNex Product Value
1350-1550	Aesthetic medical treatments	Wrinkle reduction, scar removal	More precise treatment, lower cost & size
1400-1600+	Eye-safe military applications	Targeting, guidance systems	Greater distance, lower energy use & size
1500-1600	Free space optical transmissions	Enterprise data communications	Greater transmission distance @ lower cost

 

The SemiNex product offering is well suited for these applications because of the properties of light between 1300nm and 1600nm.  There are three valuable attributes of this wavelength range:

1. It includes a key peak water absorption maximum in tissue
2. Optical fiber attenuation and free space optical attenuation are minimized in this range
3. Human eyes absorbs this light at the cornea which protects the retina against focused damage

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