Jenoptik's Lasers & Material Processing Division With New Products At LASER In Munich
The Lasers & Material Processing division of Jenoptik will have the more powerful version of the green disk laser type JenLas D2.mini, a femtosecond laser for industrial applications and a new infrared disk laser for micro materials processing on display at the LASER World of PHOTONICS from May 23-26, 2011. In addition to that, the presentation will highlight the full performance spectrum – the value chain – of the division.
For more information, visit www.jenoptik.com/laser2011.
Compact Green Disk Laser with Improved Output Power Hardly a year after launching the serial production of the compact medical laser JenLas D2.mini 2/3 W Jenoptik now presents the more powerful version of this diode-pumped green disk laser.
The new JenLas D2.mini 5/8 W with up to 8 W output is an improvement based on the innovative JenLas D2.mini technology. With small volume, its very compact shape, optimized beam quality and higher output, this laser will generate even more interest for applications in medicine as well as for shows and entertainment. This laser can be used for laser therapy in aesthetics and dermatology.
The simple integration of the robust laser in different small devices is a fundamental benefit for the customer.
The green disk laser type JenLas D2.min 5/8 W with improved output power will be demonstrated in a live display at the Jenoptik booth #C2.411.
Femtosecond Laser for Optimal Application in Industry
The new JenLasD2.fs is another product from the Jenoptik laser range. Based on the diode-pumped disk laser technology, this laser provides outstanding parameter stability and defines a new standard in laser sources of the femtosecond class. Developed for application in industrial environments, the working temperature range was extended to 15–35 °C. The laser emits high pulse energies of max. 40 µJ at 100 kHz repetition rate and can operate in the 30-200 kHz range. The beam quality of M² = 1.25 near the theoretical limit, together with pulse duration of = 400 fs opens new laser applications in industry.
To ensure industry capability, every laser is subjected to strict type tests to guarantee safe function under typical conditions of transportation, storage and operation. This includes climate and shock tests, noise immunity to external electrical noise and compliance with the low EMC standards for electrical noise emission. Major features include ease of integration of the turn-key laser in complex machines and plants. For example, the actuation signal can be released by software or hardware.
Due to the specific properties of the impact of ultra-short femtosecond laser pulses on different materials, new laser applications can be found. For example, these laser pulses are excellent for all material processing applications for which minimal heat effects during processing are important. Another area includes processing inside of transparent materials, such as glass, transparent plastics and transparent function layers. A third and final field of application is the selective ablation of individual layers in multiple-layer systems consisting of different materials.
Concrete industry applications in these areas include the 3D-micro material ablation of metal or polymer (e.g., cutting of stents), thin layer ablation in the semiconductor industry or the removal of dielectric layers on crystal solar cells in photovoltaics. Other applications are the scribing of sapphire substrate, the processing of dental ceramics and the internal marking of glass.
Extension of the Jenoptik Disk Laser Product Family for Micro Materials Processing The new infrared disk laser JenLas disk IR70 will also be on show. Thus, the Jenoptik disk laser product family, including the JenLasdisk IR50 already known in the market, is supplemented with a powerful variant. The laser particularly fulfils the requirements of the new technologies in the photovoltaic sector such as metal wrap-through (MWT) or emitter wrap-through (EWT – up to 20,000 holes/second), laser fired contact (LFC) or laser edge isolation.
The electrical efficiency of the solar cells is increased by applying the MWT or EWT technology. With both technologies the contacts are installed on the rear side of the cell instead of the front side in order to enlarge the active cell surface. The previously customary contact tracks shadowing parts of the active surface are thus partly eliminated.
Other applications of micro materials processing include the cutting of stents, micro structuring and drilling and drilling of metals.
The pulse lengths of the lasers are adjustable independently of the repetition rate so that optimal process parameters can be set. With a pulse energy of up to 7 mJ and repetition rates of up to 100 kHz the JenLas disk IR70 covers a broad spectrum of applications in the infrared wavelength range of 1,030 nm. Thus, the 65 watt system is ideal for laser-based drilling of silicon wafers for the production of efficient solar cells with rear side contacts.
Optical Isolators
Jenoptik adds to its range of products optical isolators for use in high and medium-power laser beam sources. They are characterized by very small transmission loss and high isolation values at the same time as well as minimal impact on the beam characteristics while achieving top power values.
Applications for optical isolators can be found in the field of processing highly reflective materials, particularly with regard to laser sources with high laser gain, e.g. fiber, slab and brilliant diode lasers. They are also used for the isolation of various components within laser sources, e.g. in amplifier configurations or regenerative amplifiers.
Three different types within the wavelength range from 1,030 to 1,085 nm are currently available: Two products for linearly polarized radiation with a rated power of 20 W or 200 W respectively, and one type for up to 400 W of non-polarized radiation. The latter is equipped with a hermetically sealed interface for easy integration in processing optics for application in the industrial environment of a production hall (protection class IP65).
All three types were optimized for use within a medium power range and are capable of achieving an isolation of 30-40 dB and a transmission of > 95 % (typically 97-98 %) with the smallest possible thermal and non-linear effects. This is achieved by applying optics exhibiting lowest absorption, very strong, homogenous magnetic fields and compact dimensions at the same time.
Complete Value Chain in Laser Materials Processing
The Lasers & Material Processing division of Jenoptik will present the complete value chain in laser materials processing – from laser components, laser sources and laser optics systems to the complete laser machine.
The laser components and laser sources comprise customized epitaxial layer structures on wafers, high quality laser bars and single emitters , reliable URL diode lasers, vertical and horizontal diode laser stacks with output into the kW range, high-brilliance, fiber-coupled diode laser modules and solid-state and fiber lasers in the femtosecond, nanosecond and cw-ranges. The main fields of application include a variety of industrial, medical and research applications, but also areas of defense as well as shows and entertainment.
The product line of laser optical systems for crystallization, annealing and the activation of semiconductors includes simple optical systems for generation of a line focus with a single laser source to complex sub-systems comprising of laser, homogenizing optics, imaging lens and beam diagnostics. Main applications are in solar cell processing, semiconductor doping activation as well as LCD & OLED flat screen crystallization.
In laser machines , we offer systems for process optimization and automation in our customers' production systems in the automotive, semiconductor and metal working industries, mechanical engineering, photovoltaics and medical equipment. These machines cut, weld, and perforate plastics, metals and semiconductor materials or structure, delaminate, separate, drill or dope solar cells both in thin-layer and wafer technologies with highest efficiency, precision and safety.
Latest Diode Novelties now also Presented to the European Market
The novelties in the diode laser product line displayed for the first time at Photonics West in the U.S.A. in January 2011 are now also presented to the public at Europe's most important photonics exhibition.
They comprise the easy-to-handle qcw module JOLD-x-QA-8A with integrated vertical diode laser stack and industrial water cooling for industrial, military and medical applications and the high-brilliance, fiber-coupled diode laser module JOLD-75-FC-11 with 75 W output power (105 µm fiber, NA 0.15) for the optical pumping of fiber lasers.
Both our novelties and the established standard products of Jenoptik's Lasers & Material Processing division will be presented at the Jenoptik booth #411, hall C2.
About the Jenoptik Lasers & Material Processing division
The Lasers & Material Processing division has control of the entire value-added chain of laser material processing and it is one of the leading providers – from component through to complete system. In the area of laser, Jenoptik has specialized in high-quality semiconductor materials and reliable diode lasers as well as innovative solid-state lasers, for example disk and fiber lasers. In the area of high-power diode lasers Jenoptik is acknowledged worldwide as a leader in quality for high-power diode lasers. In the area of laser processing systems we develop systems that are integrated into production facilities for our customers as part of their process optimization and automation.
These systems enable our customers to work with plastics, metals, glass, ceramics, semiconductor materials and solar cells, both in thin-film as well as wafer technology, with maximum efficiency, precision and safety.
SOURCE: Jenoptik