A Deep Ultraviolet Laser Light Source by Frequency Doubling of GaN Based External Cavity Diode Laser Radiation
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| Title: | A Deep Ultraviolet Laser Light Source by Frequency Doubling of GaN Based External Cavity Diode Laser Radiation |
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| Description: | A compact and portable laser light source emitting in the wavelength range between 210 nm and 230 nm would enable numerous applications outside of laboratory environments, such as sterilization and disinfection of medical equipment, water purification or gas and air analysis using absorption spectroscopy. Such a source is also highly attractive for the identification and quantification of proteins and biomolecules by means of laser-induced fluorescence or Raman spectroscopy. In this thesis, a novel concept to realize such a compact and portable laser light source with low power consumption and an emission around 222 nm is investigated. The developed concept is based on single-pass frequency doubling of a commercially available high-power GaN laser diode emitting in the blue spectral range. Due to the low frequency doubling conversion efficiencies in this wavelength range of about 10-4 W-1, a laser diode with high optical output power above 1 W is required as pump source. Moreover, it has to exhibit narrowband emission in the range of the acceptance bandwidth of the applied nonlinear BBO crystal. Since GaN-based high-power laser diodes typically show broad emission spectra of Δλ = 1...2 nm, stabilizing and narrowing their wavelength by using external wavelength-selective elements is investigated and presented for the first time. With the understanding for the novel concept gained in this work, a compact ultraviolet laser light source was realized. It has a power consumption of less than 10 W and is exceptionally robust due to its immoveable components. The demonstrated output power of 160 μW enables numerous industrial and everyday applications for which previous laser systems have been too complex and overly cost- and energy-intensive. |
| Authors: | Ruhnke, Norman |
| Resource Type: | eBook. |
| Subjects: | Electric power consumption, Lasers |
| Categories: | TECHNOLOGY & ENGINEERING / Electrical, SCIENCE / Spectroscopy & Spectrum Analysis, TECHNOLOGY & ENGINEERING / Lasers & Photonics |
| Database: | eBook Collection (EBSCOhost) |
| FullText | Links: – Type: ebook-pdf Text: Availability: 0 |
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| Header | DbId: nlebk DbLabel: eBook Collection (EBSCOhost) An: 3291243 RelevancyScore: 1110 AccessLevel: 6 PubType: eBook PubTypeId: ebook PreciseRelevancyScore: 1109.74133300781 |
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| Items | – Name: Title Label: Title Group: Ti Data: A Deep Ultraviolet Laser Light Source by Frequency Doubling of GaN Based External Cavity Diode Laser Radiation – Name: Abstract Label: Description Group: Ab Data: A compact and portable laser light source emitting in the wavelength range between 210 nm and 230 nm would enable numerous applications outside of laboratory environments, such as sterilization and disinfection of medical equipment, water purification or gas and air analysis using absorption spectroscopy. Such a source is also highly attractive for the identification and quantification of proteins and biomolecules by means of laser-induced fluorescence or Raman spectroscopy. In this thesis, a novel concept to realize such a compact and portable laser light source with low power consumption and an emission around 222 nm is investigated. The developed concept is based on single-pass frequency doubling of a commercially available high-power GaN laser diode emitting in the blue spectral range. Due to the low frequency doubling conversion efficiencies in this wavelength range of about 10-4 W-1, a laser diode with high optical output power above 1 W is required as pump source. Moreover, it has to exhibit narrowband emission in the range of the acceptance bandwidth of the applied nonlinear BBO crystal. Since GaN-based high-power laser diodes typically show broad emission spectra of Δλ = 1...2 nm, stabilizing and narrowing their wavelength by using external wavelength-selective elements is investigated and presented for the first time. With the understanding for the novel concept gained in this work, a compact ultraviolet laser light source was realized. It has a power consumption of less than 10 W and is exceptionally robust due to its immoveable components. The demonstrated output power of 160 μW enables numerous industrial and everyday applications for which previous laser systems have been too complex and overly cost- and energy-intensive. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ruhnke%2C+Norman%22">Ruhnke, Norman</searchLink> – Name: TypePub Label: Resource Type Group: TypPub Data: eBook. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electric+power+consumption%22">Electric power consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Lasers%22">Lasers</searchLink> – Name: SubjectBISAC Label: Categories Group: Su Data: <searchLink fieldCode="ZK" term="%22TECHNOLOGY+%26+ENGINEERING+%2F+Electrical%22">TECHNOLOGY & ENGINEERING / Electrical</searchLink><br /><searchLink fieldCode="ZK" term="%22SCIENCE+%2F+Spectroscopy+%26+Spectrum+Analysis%22">SCIENCE / Spectroscopy & Spectrum Analysis</searchLink><br /><searchLink fieldCode="ZK" term="%22TECHNOLOGY+%26+ENGINEERING+%2F+Lasers+%26+Photonics%22">TECHNOLOGY & ENGINEERING / Lasers & Photonics</searchLink> |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=nlebk&AN=3291243 |
| RecordInfo | BibRecord: BibEntity: Classifications: – Code: 621.366 Scheme: ddc Type: prePub Languages: – Code: eng Text: English Subjects: – SubjectFull: Electric power consumption Type: general – SubjectFull: Lasers Type: general Titles: – TitleFull: A Deep Ultraviolet Laser Light Source by Frequency Doubling of GaN Based External Cavity Diode Laser Radiation Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ruhnke, Norman – PersonEntity: Name: NameFull: Ruhnke, Norman IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2022 – D: 29 M: 04 Type: profile Y: 2023 Identifiers: – Type: isbn-print Value: 9783736976139 – Type: isbn-electronic Value: 9783736966130 Numbering: – Type: volume Value: 00069 Titles: – TitleFull: A Deep Ultraviolet Laser Light Source by Frequency Doubling of GaN Based External Cavity Diode Laser Radiation Type: main |
| ResultId | 1 |
