GaAs VCSEL's at /spl lambda/=780 and 835 nm for short-distance 2.5-Gb/s plastic optical fiber data links

Single fundamental mode photonic crystal vertical cavity surface emitting laser with 9 GHz bandwidth

“…Despite these promises, the development of a VCSEL which operates in a single fundamental mode during modulation has been limited due to device parasitics such as large intrinsic resistance and capacitance [1][2][3][4][5][6][7]. The 3 dB small signal modulation bandwidth for multimode VCSELs has been reported as high as 14.5 GHz for a proton-implanted VCSEL [2,3] and 17 GHz for an oxide-confined VCSEL [4].…”

Polarization squeezing in vertical-cavity surface-emitting lasers

“…As seen from Fig. 4a, the spectral density (δS 2 1 ) Ω of the Stokes parameter S 1 has a peak at a characteristic frequency Ω 1 , while two other spectra (δS 2 2 ) Ω and (δS 2 3 ) Ω for the Stokes parameters S 2 and S 3 exhibit peaks at another (higher) characteristic frequency Ω 2 . These peaks are well-known from the theory of solid-state and semiconductor lasers and have their physical origin in the relaxation oscillations due to a periodic energy exchange between the active medium and the laser radiation.…”

“…This interest is motivated in the first line by the potential applications of this type of lasers in the high-rate optical communications [2]. But there is also more fundamental reason for understanding of the polarization behavior in VCSELs, namely, a possibility of generating the intensity-squeezed light using the sub-Poissonian pumping of the active medium [3,4].…”

Low-temperature sensitive, compressively strained InGaAsP active (/spl lambda/=0.78-0.85 μm) region diode lasers

“…The high values of and together with the large transverse spot size, is beneficial for hightemperature/high-output power edge-emitter operation. The reduced carrier leakage (high and ) is also beneficial for realizing high-temperature and high-power VCSEL operation [11].…”