Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Efficient broadband spectrum oscillation was obtained directly from a laser-diode-pumped Kerr-lens mode-locked Yb:YAG laser with intracavity nonlinear media. The spectrum was expanded to around 1040 nm to 1070 nm. The spectrum is much broader than the fluorescence spectrum at 1050 nm.
We study theoretically and experimentally the strongly-coupled, nonlinear regime of a hot vapor of three-level atoms in an optical cavity. Interesting effects include lasing without inversion and polariton peak splittings.
A detailed QD-SESAM growth study enabled the first modelocking of a VECSEL with similar spot size on gain and antiresonant SESAM. Antiresonant designs can strongly improve MIXSELs, a novel type of ultrafast integrated VECSELs.
Phase to frequency conversion is demonstrated with a synchronously modelocked optical parametric oscillator, with a sensitivity of 16 MHz/radian, and a phase resolution of 9ldr10-8 radian.
We describe the use of a semiconductor optical amplifier as an intra cavity, continuous phase tuning element in an optoelectronic oscillator. A tuning range larger than 3 MHz is demonstrated in a 10 GHz oscillator.
We locked a laser to a cavity using an all-digital Pound-Drever-Hall feedback system. By performing the demodulation and feedback controller digitally the low frequency noise performance was improved compared to a conventional analog system.
We demonstrate dual low-facet-reflectivity FPLD amplitude squeezers to suppress extinction ratio of down-stream signal by 8.6 dB for injection-locking RSOA in DWDM-PON with error-free 1.25 Gbps up-stream transmission at receiving power of -25.5 dBm.
We demonstrate 40-km-reach 32-channel gigabit wavelength division multiplexing-passive optical network (WDM-PON) based on Fabry-Perot laser diode with external ASE injection. The dispersion, back-reflection and crosstalk effects in WDM-PON are also investigated.
126 mW visible light were generated by frequency doubling using bulk PPLN in a high finesse ring cavity pumped by a BAL ECDL. The locking between the two cavities is managed purely optical.
We present a compact, passively mode-locked and prismless Nd:phosphate laser, pumped by a single-mode, low-power (150-mW) laser diode. We obtained self-starting 270-fs near transform-limited pulses, employing a single Gires-Tournois mirror for intracavity dispersion compensation.
Optical waveguides formed from coupled ultrahigh-Q cavities are investigated by finite-difference time-domain (FDTD) simulation. Ultra-high group velocity dispersion together with a group velocity as low as 3times10-5 c is predicted at the band edge. It is shown that full compensation of the group velocity dispersion for chip free slow light (~c/100) over a bandwidth of 230 GHz is possible using a...
We report the demonstration of a single-longitudinal-mode 593.5-nm laser achieved via intracavity sum-frequency generation of a dual-wavelength cw Nd:YVO4 laser using two volume-Bragg-grating reflectors. >2.5-mW 593.5-nm orange light was obtained with this compact laser system.
Coupling a microdisk based laser to an external passive cavity can be used to strengthen mode selectivity and get a single, unidirectional and tunable output waveguide.
Using polarization spectroscopy to control the shape of the diode current ramp while tuning an external cavity diode laser we achieved mode-hop free tuning of up to 105 GHz with an uncoated, off-the-shelf laser diode.
We demonstrate a ~1 GHz femtosecond optical parametric oscillator synchronously pumped by a 76-MHz Ti:sapphire laser using a cavity longer than the fundamental synchronous cavity length. Near-transform-limited pulses with average durations of 227 fs are generated.
We report a cw-RGB laser based on an Yb-fiber-laser pumped OPO with intra- and extracavity wavelength converters. At 25-W pump power, the laser generated 5, 0.5, and 0.01-W at 633, 532, and 450 nm, respectively.
The microlaser consists of a tapered-fiber-coupled fused-silica microsphere, with HgTe nanocrystals deposited on one tapered fiber. Compared to a microlaser having a coated microsphere, the lasing signal is cleaner and the cavity Q remains high.
We use low finesse Fabry-Perot cavities in series to generate frequency combs with large mode spacing by simultaneously maintaining high spectral bandwidth. The attenuation of laser modes closest to the pass band exceeds 70 dB relative to the modes centered within the pass band for a 5 GHz Fabry-Perot filtering a 250 MHz frequency comb.
We demonstrate a fast control of an octave-spanning fiber-based frequency comb with an intracavity electro-optic modulator. The servo bandwidth of both repetition and carrier-envelope offset frequency is greater than 200 kHz.
All-optical packet switching with all optical heading processing using one and two Fabry-Perot laser diodes are studied numerically. Both the header and data rates are at 10 Gb/s.
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.