Piezo-electric tunable fiber Bragg grating diode laser for chemical sensing using wavelength modulation spectroscopy

Buric, Michael; Falk, Joel; Chen, Kevin P.; Cashdollar, Lucas; Elyamani, Abdessamad

doi:10.1364/oe.14.002178

Cited by 11 publications

(2 citation statements)

References 12 publications

(13 reference statements)

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“…The emission wavelength of the DFB-RFLs can be tuned by stretching the entire structure, say via a mechanical beam bending method [74] or via various linear FBG "stretching or squeezing" assemblies such as stretching of an appropriately long PZT structure [75,76] to which the FBG is firmly attached. As such, continuous tunabilities of the order of 1 nm (or several 10's of GHz), sufficient for most spectroscopic sensing applications, should be easily achievable.…”

Section: Wavelength Tunabilitymentioning

confidence: 99%

Design of a new family of narrow-linewidth mid-infrared lasers

et al. 2017

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We describe the design of a new family of high spectral brightness narrow linewidth (NLW) mid-infrared (MIR) lasers --of < 1 MHz anticipated linewidths --with potential for operation at any target wavelength between 2.5 and 9.5 µm. More specifically, we analyze the potential performance characteristics of mid-infrared distributed feedback (DFB) Raman fiber lasers (RFLs) based on π-phase-shifted (PPS) Fiber Bragg Gratings (FBGs) written in appropriately chosen low-phononenergy glass fibers. In particular, we calculate anticipated threshold pump powers for optimal laser designs and pump wavelengths for single frequency (fundamental mode) operation of specific mid-infrared DFB-RFLs operating at chosen target wavelengths, and show that these pump powers can be as low as a few milliWatts for MIR DFB-RFLs fabricated with appropriate low-loss small mode area single mode fibers. As such, we clearly establish the PPS-DFB RFL platform as a very practical approach for constructing a broad range of narrow linewidth MIR coherent sources for numerous applications, including proximal and remote sensing of molecules and various high spectral brightness and long coherence length MIR applications.

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Section: Wavelength Tunabilitymentioning

confidence: 99%

Design of a new family of narrow-linewidth mid-infrared lasers

et al. 2017

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“…If designed and aligned correctly these systems are capable of tuning over large regions without mode hopping. Other external cavity systems include fiber Bragg-grating cavities [5][6][7][8], and volumetric gratings [9].…”

Section: Introductionmentioning

confidence: 99%

External cavity diode laser based upon an FBG in an integrated optical fiber platform

Lynch¹,

Holmes²,

Berry³

et al. 2016

Opt. Express

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An external cavity diode laser is demonstrated using a Bragg grating written into a novel integrated optical fiber platform as the external cavity. The cavity is fabricated using flame-hydrolysis deposition to bond a photosensitive fiber to a silica-on-silicon wafer, and a grating written using direct UV-writing. The laser operates on a single mode at the acetylene P13 line (1532.83 nm) with 9 mW output power. The noise properties of the laser are characterized demonstrating low linewidth operation (< 14 kHz) and superior relative intensity noise characteristics when compared to a commercial tunable external cavity diode laser.

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Extended-bandwidth frequency sweeps of a distributed feedback laser using combined injection current and temperature modulation

Hefferman

Chen

Wei

2017

Review of Scientific Instruments

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This article details the generation of an extended-bandwidth frequency sweep using a single, communication grade distributed feedback (DFB) laser. The frequency sweep is generated using a two-step technique. In the first step, injection current modulation is employed as a means of varying the output frequency of a DFB laser over a bandwidth of 99.26 GHz. A digital optical phase lock loop is used to lock the frequency sweep speed during current modulation, resulting in a linear frequency chirp. In the second step, the temperature of the DFB laser is modulated, resulting in a shifted starting laser output frequency. A laser frequency chirp is again generated beginning at this shifted starting frequency, resulting in a frequency-shifted spectrum relative to the first recorded data. This process is then repeated across a range of starting temperatures, resulting in a series of partially overlapping, frequency-shifted spectra. These spectra are then aligned using cross-correlation and combined using averaging to form a single, broadband spectrum with a total bandwidth of 510.9 GHz. In order to investigate the utility of this technique, experimental testing was performed in which the approach was used as the swept-frequency source of a coherent optical frequency domain reflectometry system. This system was used to interrogate an optical fiber containing a 20 point, 1-mm pitch length fiber Bragg grating, corresponding to a period of 100 GHz. Using this technique, both the periodicity of the grating in the frequency domain and the individual reflector elements of the structure in the time domain were resolved, demonstrating the technique's potential as a method of extending the sweeping bandwidth of semiconductor lasers for frequency-based sensing applications.

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Piezo-electric tunable fiber Bragg grating diode laser for chemical sensing using wavelength modulation spectroscopy

Cited by 11 publications

References 12 publications

Design of a new family of narrow-linewidth mid-infrared lasers

Design of a new family of narrow-linewidth mid-infrared lasers

External cavity diode laser based upon an FBG in an integrated optical fiber platform

Extended-bandwidth frequency sweeps of a distributed feedback laser using combined injection current and temperature modulation

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