Results 231 to 240 of about 525,841 (267)
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Narrow linewidth unstable resonators
Annual Meeting Optical Society of America, 1988We have previously demonstrated that a feedback ring in an unstable resonator can be useful in providing narrow bandwidth radiation across the full available aperture of the resonator. In this configuration the light traveling in the forward direction in the ring passes through frequency-narrowing etalons while it is collimated and is then coupled back
D. Cooper +3 more
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Narrow-Linewidth Lasers on a Silicon Chip
2014Diode-pumped distributed-feedback (DFB) channel waveguide lasers were demonstrated in Er3+-doped and Yb3+-doped Al2O3 on standard thermally ox-idized silicon substrates. Uniform surface-relief Bragg gratings were patterned by laser-interference lithography and etched into the SiO2 top cladding. The maxi-mum grating reflectivity exceeded 99%. Monolithic
Bernhardi, Edward, Pollnau, Markus
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Narrow-Linewidth Microlasers on Silicon
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007After reviewing several laser sources based on high-Q microtoroid lasers, the recent observation of fundamental linewidths as narrow as 4 Hz in microtoroid lasers will be described. Inverse-power (Schawlow-Townes) broadening is observed.
Kerry Vahala, Lan Yang, Tao Lu
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Narrow linewidth quantum cascade laser
Conference on Lasers and Electro-Optics, 2020A narrow linewidth quantum cascade laser was obtained by optical feedback locking to a high finesse linear cavity with locking bandwidth larger than 5 MHz, resulting in an instantaneous linewidth at mHz levels.
Gang Zhao +2 more
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Narrow linewidth single frequency microfiber laser
Optics Letters, 2012A compact 2 kHz linewidth single frequency microfiber ring laser is demonstrated. Microfiber, with a diameter of 1.88 μm, which is drawn from an Er(3+)/Yb(3+) co-doped phosphate glass fiber, serves as the gain medium. By using this microfiber, a double-knot resonator with a total length of 1.75 mm is constructed.
Wei, Fan +5 more
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Dual-wavelength Narrow-linewidth Lasers and Their Applications
Advanced Solid-State Lasers Congress, 2013Our recent work on distributed-feedback, narrow-linewidth channel waveguide lasers in Er3+- and Yb3+-doped Al2O3 layers deposited on silicon microchips is reviewed.
Pollnau, Markus +3 more
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Using Loss to Narrow Plasmon Linewidths
Imaging and Applied Optics Congress, 2020Lossy materials can be used in nanoplasmonic systems to narrow plasmon linewidths, which is desirable for biosensing applications. A scattering cross section linewidth of about 30 nm is found for gold nanoparticles in the lossy P3HT.
Ryan Peck +5 more
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Narrow-linewidth quantum cascade laser at 86 μm
Optics Letters, 2014We report on a narrow-linewidth distributed-feedback quantum cascade laser at 8.6 μm that is optical-feedback locked to a high-finesse V-shaped cavity. The spectral purity of the quantum cascade laser is fully characterized using a high-sensitivity optical frequency discriminator, leading to a 1 ms linewidth of less than 4 kHz and a minimum laser ...
Eugenio Fasci +8 more
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Modulatable narrow-linewidth semiconductor lasers
Applied Physics Letters, 1988We find that using the technique of optical feedback locking, to narrow semiconductor linewidths, does not sacrifice the ability to modulate the laser’s frequency via the injection current. The frequency of a laser is stabilized to a separate Fabry–Perot reference cavity using resonant optical feedback and can be modulated efficiently at frequencies ...
L. Hollberg, M. Ohtsu
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Integrated-optic, narrow-linewidth laser
Applied Physics Letters, 1986We report the demonstration of the single-frequency and narrow-linewidth (<100 kHz) operation of an extended cavity laser consisting of a Ti:LiNbO3 single-mode waveguide circuit and an InGaAsP waveguide gain medium. A parallel coupled cavity, electro-optic elements for tuning the resonant frequencies of the cavities, and an external phase ...
S. K. Korotky +5 more
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