The simplest and most successful setup, as mentioned earlier, is the Littrow setup, which exists in four different sub-designs, mainly differing by whether the useful beam is

(b) Schematic of a 2nd-order blazed Littrow metasurface ECL, designed to be mounted inside our cryostat. Drawings of piezo- rotator and the mirror’s mount are

Figure 3 shows the total propagation losses (i.e., the sum of the material and radiative losses) as a function of the eigenmode frequency, obtained from the scattering matrix method

Unlike the previous system [10], in which the available dynamic range of QCL current tuning (between laser threshold and power rollover) was the parame- ter limiting the

Abstract: Discrete Vernier frequency tuning of terahertz quantum cascade lasers is demonstrated using a device comprising a two-section coupled- cavity.. The two sections are

5.16, which shows several leakage paths for an electron in the injector ground state g1 of structure S2, scattering either to the ground state of the excited states miniband, m1, or

the free space coupled ring cavity resonator with a wavelength tunable single peak emission..

Activities: Standard production Room-Temperature Pulsed FP RT-P-FP Standard Production Characteristics: P up to 100mW Operating current: 0.5 - 4 A Operating voltage: 8

A VECSEL resembles a diode-pumped solid state disc laser in construction [1], except that the dielectric laser disc is replaced by a surface-emitting semiconductor active

Opt. Gmachl, “Thermal and stark-effect roll- over of quantum-cascade lasers,” IEEE J. Quantum Electron., vol. Hensley et al., “Spectral behavior of a terahertz quantum-cascade

With the advent of compact MIR laser light sources includ- ing quantum cascade lasers (QCLs), and – more recently – interband cascade lasers (ICLs), the development of an

In contrast to the azimuthal polarization of ring quantum cascade lasers, we observe a radial polari- zation of the projected nearfield of ring interband cascade lasers.. These

The lack of electrical methods to tune fre- quency and low output power make it difficult to devise a sensing scheme with THz QCLs based on intensity interrogation because of

Centeno R, Marchenko D, Mandon J, Cristescu SM, Wulterkens G, Harren FJM (2015) High power, widely tunable, mode-hop free, continuous wave external cavity quantum cascade laser

Heavy alcohol intake was significantly positively associated with prediabetes in the total study population and in men, while a non-significant trend towards increased risk was pre-

We found a reduced threshold current density in the device fabricated from MR 3881 (42 periods) compared with MR 3877 (35 periods), and the reduction in

The results are obtained by calculating the transition energy and dipole moment between states 1 and 2 of the RIM section at different bias voltages, followed by calculating the

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