A simulated emission spectrum of mid-infrared disc-shaped quantum cascade laser with 60μm radius is consistent with the experimentally observed irregular spacing between quantum cascade laser emission lines. 展开 关键词: high-frequency effects plasma effects optical properties of specific thin films ...
We describe tunable 5–12-μm mid-infrared generation in single-crystal silver gallium sulfide (AgGaS2), from nonlinear optical difference-frequency generation. Signal and idler waves obtained from a Nd:YAG laser–pumped LiNbO3 optical parametric oscillator (OPO) were mixed in AgGaS2 crystal to ...
Improved performance of a continuous-wave (cw) laser spectrometer for Doppler-limited infrared spectroscopy of molecules based on difference-frequency generation (DFG) in AgGaS2 has been achieved. The spectrometer was configured to generate continuous scans of up to 1 cm−1 from 1550 to 2100 cm...
Average power levels of up to 1.1 mW at a repetition rate of 82 MHz are obtained in the mid infrared. This is achieved via nonlinear mixing of 170 mW, 65 fs pump pulses at a fixed wavelength of 1.58 microm, with 11.5 mW, 40 fs pulses tunable in the near-infrared range between 1.05...
Finite-Difference Time-Domain Simulation of Mid- and Far-Infrared Quantum Cascade Lasers We present simulations of mid- and far-infrared quantum cascade lasers operating with/without external magnetic field. Maxwell-Bloch solver based on the fi... V. TAMOSIUNAS,Z. KANCLERIS,M. DAGYS,... - ...
We experimentally demonstrate mid-infrared difference frequency generation in suspended 181-nmthick GaAs waveguides. The extreme form-birefringence in the nanoslab waveguide enables phase-matching between the CW signal (1550 nm), pump (1025 nm), and idler (3000 nm).Stievater, T.H....
Therefore, if we continued to increase the power of the laser irradiating the sample, the temperature at the heterojunction would have a large space to increase. The corresponding relationship between the photograph (lower inset) and the infrared photograph of the actual sample is shown in Fig.1...
The energies of fundamental modes of atomic vibrations in molecules correspond to mid-infrared (mid-IR) frequencies in the range between several hundreds and several thousands of inverse centimeters, which are often referred to as the molecular fingerprint region (usually located in the wavenumber rang...
In the mid-IR spectral region between 3 micrometers and 25 micrometers lead salt diode lasers are the most common light sources for high-resolution spectroscopy. Other light sources as CO-, CO 2 -lasers or sideband-lasers are expensive, non- portable and poorly tunable. To overcome the cryog...
Gonzalez, " Multiwatt-level continuous wave midwave infrared generation using difference frequency mixing in periodically poled MgO-doped lithium niobate", Opt... Shekhar Guha,Jacob O. Barnes,Leonel P. Gonzalez - IEEE 被引量: 4发表: 2014年 [OSA CLEO: Science and Innovations - San Jose, Califo...