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The nominal peak power of the THz source is about 120



W with 10



sec pulse length.

The duty cycle of the pulsed AVTECH-1011 controller has been set to 10%, yielding an
average power of about 12



W. By considering the transmission value of 65% for the

quartz window and the refractive silicon float zone custom objective in front of the QCL,
the average output power may reach up to 8



Custom THz Objective

Number of lenses

Lens material

HRFZ-Si

AR coating (thickness)

Parylene C (15



Focal length

44 mm

F number

0.95

Aperture stop

External, fixed diameter

Object distance

30 cm to infinity

Dimension



= 80 mm; length = 60 mm

THz Source

Type

Quantum Cascade Laser

Peak power

120



Repetition rate

10 kHz

Duty cycle

10%

Average power

12 µW

Pulse duration



sec

Central wavelength

100



Table 1. Main Characteristics of Custom THz Objective and QCL THz Laser

Содержание IRXCAM INO160THz

Страница 1: ... 2010 Proprietary Notice Details of design and engineering are the exclusive property of INO and other partners and are strictly confidential The information given herein is subject to change at any time and without notice All rights are reserved The information included in this document may not be reproduced or passed on in any manner without prior consent of INO ...

Страница 2: ...data of the digital sensor 16 bit 30 frames per second The user is then able to select the most appropriate post processing treatment method depending on the application The IRXCAM camera module provides real time access to sensor parameters The user can define the observation window or adjust the gain and integration time to the dynamic range of the scene The IRXCAM camera module is simple and ea...

Страница 3: ...Ethernet Link RJ 45 connector 16 bit raw data Control Gigabit Ethernet Link System operation control Loading of parameters calibration tables FPA Operability 99 9 Frame Rate 30 Hz Available Options External trigger input opto isolated TEC driver Random access readout Mechanical support DEV Power Supply 9 to 12 Volts DC Power Consumption With GigE Link 4 Watts Overall Dimensions 65 mm H X 59 mm W X...

Страница 4: ...odule consists of a sensor assembled to an electronic proximity The sensor is a sealed box under vacuum containing a microbolometer detector array size 160X120 named INO160THz The camera assembly is presented in Fig 1 Fig 1 IRXCAM Camera Module ...

Страница 5: ...rder to prevent possible damage to the equipment ESD SENSITIVE Workstation setup for device utilization Choose a place away from the hallway Make sure the workstation is in accordance with level ESD Class 1 according to NASA 8739 7 Install a ground guard Ground all electrical tools and testing equipment Wear an ESD smock nitrile gloves and or an antistatic bracelet ...

Страница 6: ...e black and red 4 power cable should be connected via a standard power pack It is important to remember that an 5 antistatic bracelet should be worn when plugging in and manipulating camera hardware Fig 2 IRXCAM Interconnections to External Components All other connectors are not functional with the INO160THz sensor Note that the IRXCAM module has been developed to adapt to different INO sensors S...

Страница 7: ...QCL source while a custom silicon float zone THz objective is placed in front of the QCL for focusing the laser onto the detector The main characteristics of the custom THz objective and the THz source are presented in Table 1 The QCL beam has a large divergence of about 22 involving the use of an optical objective or series of lenses for collecting and focusing the emitted radiation onto the INO1...

Страница 8: ...front of the QCL the average output power may reach up to 8 W Custom THz Objective Number of lenses 2 Lens material HRFZ Si AR coating thickness Parylene C 15 m Focal length 44 mm F number 0 95 Aperture stop External fixed diameter Object distance 30 cm to infinity Dimension 80 mm length 60 mm THz Source Type Quantum Cascade Laser Peak power 120 W Repetition rate 10 kHz Duty cycle 10 Average power...

Страница 9: ... 07 07_17 08 05 0280 bmp Fig 4 Images of the QCL Beam Taken with the THz Optimized FPA Mounted on the IRXCAM Camera Module Note that the difference between images above is mainly due to the adjusting contrast and brightness values from the IRXCAM software The advanced IRXCAM device settings used for imaging the THz QCL beam are presented in Table 2 Note that all bias voltages given in Table 2 are ...

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