Reaching the mid-infrared

BROADBAND MID-INFRARED SOLID-STATE LASERS Broadband Mid-Infrared Lasers

A survey of broadband Co2+and Cr2+-based lasers is presented. These mid-IR sources, operating in the very interesting “molecular fingerprint” region between ∼1.6 and 3.5μm offer the broadest bandwidth from all solid-state vibronic lasers. The emphasize is made on Cr2+-doped lasers, which have not only the widest and the highest gain, but also operate at room-temperature and produce the shortest...

Mid-infrared upconversion spectroscopy

Iso mid - Infrared

We report on the mid-IR imaging at 7 and 10 m of the galaxy cluster Abell 370, obtained with the ISOCAM instrument onboard ESA's Infrared Space Observatory (ISO), as part of an ongoing program to image gravitational arcs and arclets in distant clusters. We have recorded initial detections of the A0 giant arc in both bandpasses, the two central dominant galaxies at 7 m, and several other cluster...

Mid Infrared Polarisation of Ultraluminous Infrared Galaxies ⋆

The mid infrared polarisation properties of four Ultraluminous Infrared Galaxies (ULIRGs) have been investigated by broad band filter observations with the ISOCAM instrument on board the Infrared Space Observatory (ISO). The wavelength region from 5 to 18μm was selected where the emission from the putative torus peaks. We report detection of polarisation for all ULIRGs studied. The fractional p...

The Orion Nebula in the Mid-infrared

Q1 We present two wide-field ( 50 ; 3A5), diffraction-limited (k=D ’ 0B5 at 10 m), broadband 10 and 20 m images of the Orion Nebula, plus six 7–13 m narrowband (k= k ’ 1) images of the BN/KL complex taken at the 3.8 m UKIRT Q2 telescope with the MPIA MAX camera. The wide-field images, centered on the Trapezium and BN/KL regions, are mosaics of 3500 ; 3500 frames obtained with standard chopping ...