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

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Others solutions to improve the brightness (1) : internal approach MOPA 1 mm Laser (straight section with a Bragg grating) R 2 =0.01% - 1.5W FWHM// 0.26° Ortel IEEE- PLT 99 - Difficulties: •R 2 ≈ 0.01% • interaction between the 2 sections I 1 I 2 Master Oscillator <strong>Power</strong> Amplifier Tapered amplifier section • p-down mounting is difficult α- DFB I - 0.94 W FWHM// 0.2° SDL CLEO-97 - 14 éléments bar, 20 W 75 A, FWHM// 1.1° , SDL CLEO-97 - weak wall-plug efficiency - difficult fabrication
Others solutions to improve the brightness (2) : internal approach The index guided tapered laser bar 30 µm 15 µm - 8W 10A, FWHM// 5° à 4.5W, R 2 =1%, GEC EL-99 200 µm 1800 µm The gain guided tapered laser 100 µm 1900 µm - 2.2 W 4 A FWHM// 0.24° M²=2.2, R2= 0.05%, θ 200 µm Fraunhofer SPIE-98 - 25 lasers bar, 25W 50A, M²=2.6 / emitter, Ipol Monomode lateral section : ridge Fraunhofer IEEE-PTL99
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 and 30: Why a high brightness laser diode a
Page 31 and 32: 12 11 10 CW optical power records d
Page 33 and 34: In the parallel direction : 2 main
Page 35 and 36: The broad-area laser 100 µm large
Page 37: The ridge laser 5 µm large * 2mm l
Page 41 and 42: Others solutions to improve the bri
Page 43 and 44: Semiconductor amplifier and refract
Page 45 and 46: Others solutions to improve the bri
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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