Investigation of astigmatism in tapered edge-emitting diode amplifiers at 980 nm

Hildenstein, Philipp; Werner, Nils; Paschke, K.; Tränkle, G.

doi:10.1117/12.2609420

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…To investigate the beam quality in the slow axis of our DBR-TPL we used the method of the moving slit. We recorded the intensity profiles of the near field (intensity at the facet), (virtual) beam waist 26 , and far field of the DBR-TPL at different power levels. Fig.…”

Section: Beam Characteristicsmentioning

confidence: 99%

Distributed Bragg reflector tapered diode lasers emitting reliably more than 7 W at 1180 nm

Feise,

Senel,

Wenzel

et al. 2024

High-Power Diode Laser Technology XXII

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In this paper, we will show reliable lasing performance of distributed Bragg reflector tapered diode lasers (DBR-TPLs) emitting at 1180 nm more than 7 W in continuous wave operation for 3,000 h without failure. The devices feature an epitaxial layer structure with an optimized strained double quantum well in a newly developed asymmetric large optical cavity resulting in a small vertical far field emission of 16° (FWHM). The DBR-TPLs consist of a 4 mm long tapered gain-guided section and a 2 mm long ridge waveguide section containing a 1 mm long DBR-grating. Owing to the integrated DBR-grating the investigated devices show predominantly longitudinal single mode emission between mode hops and an excellent beam quality with a power content of more than 75% in the central lobe at 8 W.Therefore, DBR-TPLs emitting at 1180 nm have become a highly efficient and narrowband light source, which can be used for efficient frequency doubling and enable various applications. In this paper epitaxial, device and emission characteristics will be discussed in detail.

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Section: Beam Characteristicsmentioning

confidence: 99%

Distributed Bragg reflector tapered diode lasers emitting reliably more than 7 W at 1180 nm

Feise,

Senel,

Wenzel

et al. 2024

High-Power Diode Laser Technology XXII

Self Cite

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High-power micro-laser sources in the green spectral range with single-mode fiber output

Werner,

Sahm,

Feise

et al. 2024

Nonlinear Frequency Generation and Conversion: Materials and Devices XXIII

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In this work, a high-power laser source with single-mode fiber output in the green spectral range is presented. A ridge waveguide laser with a distributed Bragg-reflector (DBR-RWL) and a tapered amplifier (TPA) are used as a pump source for a ridge waveguide periodically poled lithium niobate (RW-PPLN) crystal. The whole setup fits into a butterfly housing with a footprint of only 76 mm × 44 mm. At an emission wavelength of 532 nm, an optical output power of hundreds of milliwatt in a single spectral mode with a spectral width of the order of 1 MHz is achieved.

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Investigation of astigmatism in tapered edge-emitting diode amplifiers at 980 nm

Cited by 2 publications

References 5 publications

Distributed Bragg reflector tapered diode lasers emitting reliably more than 7 W at 1180 nm

Distributed Bragg reflector tapered diode lasers emitting reliably more than 7 W at 1180 nm

High-power micro-laser sources in the green spectral range with single-mode fiber output

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