Near Infrared Diode Laser THz Systems

Near-infrared diode laser airborne hygrometer

We describe a new laser-based hygrometer for ambient water vapor monitoring which uses a fiber-optic coupled, near-infrared diode laser in conjunction with high frequency wavelength modulation spectroscopy. The instrument operates unattended, uses little power, can be extremely compact, and exhibits high detection sensitivity. This instrument was flown on a KC-135 aircraft for a period of six m...

Laser diode photoacoustic detection in the infrared and near infrared spectral ranges.

A new technique for high resolution photoacoustic detection based on application of laser diodes has been developed. This method was tested and compared using identical photoacoustic instrumentation (cell and microphone) to study gas absorption in three different spectral regions, namely: the infrared range near 2100 cm(-1), CO and OCS fundamental band absorption; the ranges near 4200 and 4350 ...

CW THz Wave Generation System with Diode Laser Pumping

NEAR INFRARED SPECTROSCOPY USING GaAlAs-DIODE LASERS

Some spectroscopic techniques based on near infrared djode lasers are discussed with special emphasis on molecular spectroscopy. The semiconductor lasers provide for not only cheap coherent light sources of high quality, but also for new possibilities in experimental physics.

Non-Invasive Glucose Estimation Based on Near Infrared Laser Diode Spectroscopy

Diabetes mellitus (DM) is a serious disease that affects not only the patient’s internal organs, circulation system and eyesight, but also their entire body. There are reportedly more than 120 million diabetic patients in the world at the moment and this figure is expected to double within the next ten years. India is the country with the highest rateof diabetes patient, with a current figure o...