High Power Diode Lasers - Center for Biomedical Optics and New ...

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How can we bring more power in the optical fiber Efficient coupling of the emitted power in the optical fiber Pump diode Coupling optics Optical fiber ⇒ that’s why we need : high power + high beam spatial quality = high brightness
12 11 10 CW optical power records delivered by single 100µm wide emitters at 25°C 30/06/00 13:35:35 Max. optical power (W) 9 8 7 6 5 4 3 2 (55 µm) GaAs/AlGaAs : Mitsui Chemicals, Jap. Al-free : Wisconsin U./ Coherent USA AlGaInAs/AlGaAs : Optopower Corp. USA AlGaAs : SDL, USA AlGaAs : Fraunhofer Inst., Ger. GaAsP/AlGaAs : F. Braun Inst., Ger. GaAs/AlGaAs : Thales TLD Al-free : Thales TRT 720 740 760 780 800 820 840 860 880 900 920 940 960 980 1000 Wavelength (nm)
Page 1 and 2: Bio-Photonics ’03 Summer School H
Page 3 and 4: How is a laser diode Max. size : 3
Page 5 and 6: Which material system for which wav
Page 7 and 8: substrate Schematic of the growth o
Page 9 and 10: Layers growth : 2 kinds of epitaxy
Page 11 and 12: Process Three steps of the planar p
Page 13 and 14: And electrical wires soldering …
Page 15 and 16: The laser diode : assymetric device
Page 17 and 18: • power measurement : high diverg
Page 19 and 20: • far-field measurement Laser dio
Page 21 and 22: W(z) = W W(z) 0 ⎛ 1+ ⎜ ⎜ ⎝
Page 23 and 24: • Catastrophic optical mirror dam
Page 25 and 26: Fabrication •Materials • Epitax
Page 27 and 28: Fabrication •Materials • Epitax
Page 29: Why a high brightness laser diode a
Page 33 and 34: In the parallel direction : 2 main
Page 35 and 36: The broad-area laser 100 µm large
Page 37 and 38: The ridge laser 5 µm large * 2mm l
Page 39 and 40: Others solutions to improve the bri
Page 43 and 44: Semiconductor amplifier and refract
Page 47 and 48: Between the broad-area laser and th
Page 49 and 50: Index guided tapered lasers bar Min
Page 51 and 52: • Tapered laser bars coupled in a
Page 53 and 54: Beam shaping technique General prin
Page 55 and 56: Beam shaping technique Schematic op
Page 57 and 58: ars at 808-980 nm On the laser diod
Page 59 and 60: Results with broad-area lasers - FB
Page 61 and 62: Results with tapered lasers - FBH 6
Page 63 and 64: CeramOptec GmbH Medical application
Page 65 and 66: CeramOptec GmbH Application Test of
Page 67 and 68: CeramOptec GmbH Application Test of
Page 69 and 70: Application Test of 975 nm system C

High Power Diode Lasers - Center for Biomedical Optics and New ...

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