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Diode lasers (laser diodes) use nearly microscopic chips of gallium arsenide or other exotic semiconductors to generate coherent light in a very small package. The energy level differences between the conduction and valence band electrons in these semiconductors are what provide the mechanism for laser action. Common features to consider for diode lasers include fiber pigtailed and array configuration.  A laser diode can have an optical fiber pigtail precisely aligned and attached for optimum coupling efficiency.  In an array laser diodes are packaged as multiples.  Laser diode arrays will contain a certain number of elements (diodes). 

Important laser performance parameters to consider when specifying diode lasers include wavelength, beam size, beam divergence, operating current range, operating temperature range, and pulsed.  The wavelength specifies the output wavelength of the laser diode.  The beam size refers to the largest dimension of the beam when exiting the laser.  The beam divergence refers to the change in beam diameter as a function of distance from the laser.  The operating current is the current range the laser diode is designed to operate in.  The operating temperature is the temperature range the laser diode is designed to operate in.  Average power is an important continuous wave laser specification to consider. Average Power is the power (in watts) of a continuous wave laser.  Some diode lasers are designed for pulsed operation.  Important pulsed laser specs to consider include pulse energy, pulse length, and repetition rate.  The pulse energy is the energy per pulse of the laser.  The pulse length is the length in time of a pulse.  The repetition rate is the number of pulses per second.

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Products & Services Related to Diode Lasers
Carbon Dioxide (CO2) Lasers
Carbon dioxide (CO2) lasers use the energy-state transitions between vibrational and rotational states of CO2 molecules to emit at long IR, about 10 µm, wavelengths. These lasers can maintain continuous and very high levels of power and are typically used in cutting, welding, etching, and marking applications.
Helium Cadmium (HeCd) Lasers
Helium cadmium (HeCd) lasers are relatively economical, continuous-wave sources for violet (442 nm) and ultraviolet (325 nm) output. They are used for 3-D stereolithography applications, as well as for exposing holographs.
Ion Lasers
Ion lasers function by stimulating the emission of radiation between two levels of an ionized gas. They provide moderate to high continuous-wave output of typically 1 mW to 10 W.
Laser Pointers
Laser pointers are compact instruments that produce a low-power, visible laser light. They are often used for pointing out features on a projected visual display.
Lasers, All Types
Lasers are devices that produce intense beams of monochromatic, coherent radiation. The word “laser” is an acronym for Light Amplification by Stimulated Emission of Radiation.
Nitrogen Lasers
Nitrogen lasers are an excellent source of high intensity, short pulse, ultraviolet radiation. They can be used as an excitation source, or as a pump for a dye laser.
Solid State Lasers
Solid state lasers use a transparent substance (crystalline or glass) as the active medium, doped to provide the energy states necessary for lasing.  Solid state lasers are used in both low and high power applications.

Other Topics You Might Be Interested In
Chapter 24.1 - Tunable Vibronic Solid-State Lasers
One of the newer additions to the commercial laser world is a family of solid-state lasers with tunable wavelength. Their tunability originates from their operation on “vibronic”... (Read More)
Chapter 24.2 - Introduction and Description
As in most other solid-state lasers, the active species in vibronic lasers is an impurity in a crystalline (or glass) host pumped by light from a flashlamp or another laser. The tunability comes... (Read More)
Chapter 24.3 - Internal Workings and Structure
Table 24.1 lists important vibronic solid-state lasers. All are four-level laser systems in optically pumped crystals. Many rely on chromium, the active medium in nontunable raby lasers, but operate... (Read More)

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Diode Lasers ProLite® Diode Lasers Alignment Laser Home > Products > Lasers > Diode Lasers
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Diode lasers
Tiny laser diode packs invisible punch Powerful 685nm laser diode is energy efficient New passively cooled diode laser on an industry standard mount
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Part Numbers for Diode Lasers
Part # Distributor Manufacturer Product Category Description
LASER DIODE netCOMPONENTS Not Provided Not Provided Not Provided
WAVELENGTH LASER DIODE O netCOMPONENTS Not Provided Not Provided Not Provided
X9530V14IZ-ND Digi-Key Intersil Integrated Circuits (ICs) IC LASER DIODE CTRLR 14-TSSOP
SY88702KG TR-ND Digi-Key Micrel Inc Integrated Circuits (ICs) IC LASER DIODE DRIVER 5V 10-MSOP

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