Quantum-cascade distributed-feedback lasers with high-power, continuous-wave (cw), tunable, single-mode emission are reported. The emission wavelengths are near 5.2 and 7.95 mu m.
planar, fully gain guided tapered lasers deliver 1.5 W CW, with M2 = 1.6, T0 = 143 K and a slow axis divergence of only 1.3ð FWHM and 2.4ð at 1/e2.
Index-guided tapered lasers at 975 nm deliver 1 W CW, with a low M2 of 1.6 at 1/e2, which is a record for such a device, no measurable astigmatism, and a narrow far-field angle of 6.8deg FWHM.
We report the demonstration of high-power and low relative intensity noise (RIN) directly modulated distributed feedback lasers at 1.55 μm.
We describe for the first time to our knowledge the performance for a linear array of tapered laser diodes with both fast- and slow-axis collimation using a microlens for fast-axis collimation and
We propose a low-complexity and high-precision symbol synchronization algorithm based on dual-threshold amplitude decision for FPGA-based real-time Intensity Modulation Direct Detection (IMDD) OFDM
This paper describes an apparatus for performing high-precision electrical and thermal characterization of thermoelectric modules (TEMs).
There is a straightforward algorithm for computing the transitive closure of an n-node graph in 0(log sup 2 n) time on an EREW-PRAM, using n sup 3 /log n processors, or indeed with M9n) log n proce
IC-compatible microelectromechanical intermediate frequency filters using integrated resonators with Q's in the thousands to achieve filter Q's in the hundreds have been demonstrated using a polysi
While integration technology has steadily improved size and performance for wireless baseband circuitry, quality factor and frequency limitations still limit RF front-end circuitry to many large di
