The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON ELECTRONICS
Transactions ID Number: 88-143
Full Name: Bretislav Mikel
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: Kralovopolska 147
Country: CZECH REPUBLIC
Tel: 541514252
Tel prefix: 420
Fax: +420 541514402
E-mail address: mikel@isibrno.cz
Other E-mails:
Title of the Paper: High frequency stability semiconductor laser sources at 760 nm wavelength
Authors as they appear in the Paper: Bretislav Mikel, Zdenek Buchta, Josef Lazar and Ondrej Cip
Email addresses of all the authors: mikel@isibrno.cz,buchta@isibrno.cz,joe@isibrno.cz,ocip@isibrno.cz
Number of paper pages: 10
Abstract: Measurement with nanometer resolution is required for the next advance in nanotechnology. Especially the non contacting methods of measurement are very .promising. We present the set-up of the laser interferometer with nanometer resolution. We developed three types of laser sources especially for using in laser interferometry and absolute laser interferometry. The standard He-Ne laser source for conventional laser interferometry techniques can be replaced by one of these tree types of laser sources. We used Vertical Surface Emitting Laser (VCSEL) and Distributed Feed-Back (DFB) laser diodes to design these laser sources. For these laser diodes we developed several methods to improvement their wavelength stability and tunability by fiber Bragg gratings (FBGs). We developed simulation method to calculation of arbitrary fiber grating (apodized, chirp etc.) with high precision by combination of methods based on layered dielectric media (LDM) and transfer matrix. On the!
basis of our simulations and measurements of the commercially available fiber gratings we designed a special 100 mm long fiber Bragg grating with apodization. We expect the application of the FBG to improvement of the linewidth and mode-hop free tuning range of semiconductor lasers at the wavelength 760 nm to increase resolution of fiber laser interferometer based on these diodes. We built the absolute fiber laser interferometer with Vertical Cavity Surface Emitting Laser (VCSEL) to easy employ FBG to stabilize wavelength and control the tuning range. First set up is presented.
Keywords: Laser interferometry, Absolute measurement, Tunable laser diodes., DFB laser diode, VCSEL laser diode.
EXTENSION of the file: .pdf
Special (Invited) Session: Semiconductor laser sources at 760 nm wavelength for nanometrology
Organizer of the Session: 645-358
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