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Solar Cell Processing

Feb 2010
JENOPTIK Laser GmbH, Healthcare & IndustryRequest Info
Jenoptik Laser, Optik, Systeme GmbH has released the JenLas disk IR50 for metal and emitter wrap-through applications. The laser combines beam quality in the infrared wavelength range at 1030 nm, with a flexible tunable pulse length. The 45-W system is suitable for laser drilling of silicon wafers for back-contact solar cells. It features passively cooled diodes, laser parameter adjustability and fast acousto-optic modulator power control. It delivers output power of >45 W at 30 kHz, linear polarization and a beam quality of M2 ≤1.2. Other applications include 3-D prototyping, engraving, wafer dicing and scribing, microdrilling, microcutting and microstructuring.


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acousto-optic modulator
A device that varies the amplitude and phase of a light beam; e.g., from a laser or by sound waves. Also known as a Bragg cell.
A source of radiation.
With respect to light radiation, the restriction of the vibrations of the magnetic or electric field vector to a single plane. In a beam of electromagnetic radiation, the polarization direction is the direction of the electric field vector (with no distinction between positive and negative as the field oscillates back and forth). The polarization vector is always in the plane at right angles to the beam direction. Near some given stationary point in space the polarization direction in the beam...
The process of perforating a silicon or ceramic substrate with a series of tiny holes along which it will break. Nd:YAG or CO2 lasers are now routinely used.
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