Jenoptik's Lasers and Material Processing division has introduced its infrared disk laser JenLas disk IR70. The disk laser product family including the JenLas disk IR50 is already established in the market. By expanding the product family to higher power, the JenLas disk IR70 laser meets the requirements of the new technologies in the field of photovoltaics such as metal wrap-through(MWT) and emitter wrap-through (EWT – up to 20,000 holes/second).
Further applications are long-distance marking of wafers, laser-fired contacts (LFC) as well as laser edge isolation. The JenLas disk IR70 allows users to achieve the highest quality at maximum throughput. This feature allows the user to achieve optimal laser parameters because the laser pulse length can be adjusted independently of the repetition rate. The laser covers a wide range of applications in the infrared wavelength range at 1,030nm with pulse energies up to 7mJ and repetition rates up to 100kHz. Consequently, the 65W system is ideal for the laser drilling of silicon wafers, which then allow the efficient production of back-contact solar cells.