B e r g m a n s M e c h a t r o n i c s L L C Laser Alignment - - PowerPoint PPT Presentation

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B e r g m a n s M e c h a t r o n i c s L L C Laser Alignment System for Tunable Diode Laser Sensors www.bergmans.com Jan 2010 1616 Bedford Lane, Unit A Phone: 714-474-8956 Newport Beach, CA 92660 Fax: 949-646-1429 Bergmans Mechatronics

SLIDE 1

Laser Alignment System for Tunable Diode Laser Sensors

www.bergmans.com

Jan 2010

1616 Bedford Lane, Unit A Phone: 714-474-8956 Newport Beach, CA 92660 Fax: 949-646-1429

B e r g m a n s M e c h a t r o n i c s L L C

SLIDE 2

Fiber Optic Cable Coax Cable Legend Control Cable LasIR LAS Processing Unit LasIR Detector Enclosure Detector Signal Launch Optics Enclosure Control Signals to Stepper Motors IR Laser Light Beam Path Process Gas Stepper Motors and Lens

Laser Alignment System - Schematic

Bergmans Mechatronics LLC

SLIDE 3

LAS Basic Mechanical Components

Bergmans Mechatronics LLC

Stepper motors Linear potentiometers Mirror mount (base) Collimating lens Left side view Mirror mount (pivoting platform) Launch optics mechanism within Unisearch NEMA-4 enclosure at power plant Stepper Motors Stepper Motor Controller Mirror Mount Collimating Lens Fiber Optic Cable Window

SLIDE 4

LAS Processing Unit Integrated with LasIR Ammonia Monitor

Bergmans Mechatronics LLC LasIR NH3 Monitor Laser Alignment System Processing Unit Laptop Ethernet Router

SLIDE 5

Stepper motors Unisearch mirror mount (Note 1) Modified version of stock optics mount Through holes for mounting to Unisearch flange Linear potentiometers

Laser Alignment System - Launch Optics Envelop

Bergmans Mechatronics LLC

Notes: 1) Mirror mount is stock ThorLabs model KM100B 2) Dimensions in inches Right side view Top view Front view

SLIDE 6

Bergmans Mechatronics LLC

Laser Alignment System – NEMA-4 Enclosure

Launch optics mechanism mounted within Unisearch NEMA-4 enclosure at power plant

SLIDE 7

Based on results of full-scale testing in coal-fired power plant duct:

For manually aligned system with 1.2” of detector movement, spot size must be 3.4” diam (9.1 in2 area)
Auto-aligned system, spot size can be 1” diam (0.8 in2 area)
Resulting power density of manually aligned system is 8.6% of auto-aligned system

Launch Detector 28 feet 1.2” 1” Ø 3.4” Ø

Effect of Detector Movement on Beam Power

Bergmans Mechatronics LLC

SLIDE 8

Detector Signal Cable Legend LAS Control Cable

Transmitter LAS Processing Unit Detector Signal LAS Launch Optics Enclosure Control Signals to Stepper Motors Receiver Process Gas Stepper Motor Controlled Mirror Mount and Mirror

Interfacing Non-Fiber Coupled TDL Sensor to Laser Alignment System (Proposed)

Bergmans Mechatronics LLC

Laser Beam Path