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This paper refers to recent developments within TRUMPFs direct diode laser program. We primarily focus on the development of high-efficient, lower-brightness direct diode laser systems which are currently launched into the market of laser metal brazing and welding. In this context, we report on major technical improvements of individual building blocks of such systems and finally give a brief insight...
Among the various femtosecond laser oscillators that are commonly used as optical frequency combs in a wide range of fields, Ti:sapphire oscillators offer the advantage of operating at the highest repetition rates, supporting the shortest pulses with octave-spanning spectra directly from the laser, and exhibiting very low residual frequency noise due to the high quality factor of their resonators...
630 nm single mode lasers with a V-profile layer incorporated within the waveguide core exhibit reduced fast axis divergence (19° FWHM) while maintaining a low threshold current (30 mA), making them ideal for display applications.
High power pump modules are used for industrial as well as telecom applications such as for fiber lasers and cladding pumped erbium doped fiber amplifiers (EDFA) [Lichtenstein, N., et al., 2004]. Key element of a pump module is a single emitter laser diode, which normally has an aperture of around 90 mum, in order to provide best coupling into an optical multi-mode fiber with a 105 mum core diameter...
A reliable 808-nm single mode laser diodes with a low divergent beam and high light output power is demonstrated. The device is found to be applicable for longitudinal pumping of Nd-doped solid state lasers.
Very high power and efficient 980 nm pump laser diodes have been developed in a ridge waveguide process. Based on these laser diodes, modules with a power output of 1 W in the fiber at 1.4 A drive current and a power conversion efficiency of 40% are demonstrated
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