RDCTED TRD 20210406.pdf

Technical Requirements

For

Infrared Development Laser Systems

For The

Guided Weapons Evaluation Facility

782 TS/RNWG

6 April 2021 ii

Revision History

Rev. No. Description Date iii

Abbreviations, Acronyms, and Symbols

A-weighted decibels dBA

Degrees Celsius °C

Flight Motion

Simulators

FMS

Guided Weapon

Evaluation Facility

GWEF

Hertz Hz

Inch (Inches) ”

Infrared IR

Kilo k

Liters per minute lpm

Mega M

Mid-wave Infrared MWIR

Micrometers µm

Millimeters mm

Milliradians mrad

Volts Alternating

Current

VAC

Pounds lbs

Pound-force per square inch psig iv

Table of Contents

Abbreviations, Acronyms, and Symbols ....................................................................................... iii

Table of Contents ........................................................................................................................... iv

1. Introduction

2. Laser System Physical Requirements

3. Power Requirements

4. Warranty

5. Infrared Development Laser Performance Requirements

6. Thermoelectric Chiller Requirement

1. Introduction

a. This technical requirements document is for development laser systems used at the

Guided Weapon Evaluation Facility (GWEF), 782 Test Squadron/RNWG, Eglin AFB, FL. The IRCM Capability Modernization project in support of the Guided Weapons

Evaluation Facility (GWEF) HITL test mission requires Mid-wave Infrared (MWIR) lasers to serve as infrared sources integrated on the FMS for simulation software development and test. In addition, MWIR source are required to develop optical fiber based systems to off-board sources from the FMS and advanced optical attenuator development. These MWIR laser sources and support equipment have to meet specific physical and performance requirements to be suitable to meet the project task requirements.

b. Quantity: The GWEF requires two complete laser systems with controller, thermoelectric chillers, cooling box and water cooling plate included. In addition, the GWEF requires a space thermoelectric chiller.

c. The terms “Threshold” and “Objective” may be used throughout this specification. A threshold is the minimum acceptable requirement. An objective is a desired capability.

d. Contractor proposals should identify any specifications that are not technically feasible or have an undue impact on cost. Should this occur, proposals should provide recommended alternatives to the identified specification as well as impacts on overall system performance and cost.

2. Laser System Physical Requirements

a. The laser head volume shall be no larger than 6” x 4” x 4”.

b. The laser head weight (excluding cooling block, controllers and cables) shall be no greater than 5 lbs.

c. The cooling block shall be no greater than 3 lbs.

d. The laser system shall be mountable using standard ¼”-20 tapped mounting holes.

3. Power Requirements

a. Laser and Thermoelectric shall have a Universal Power Input (100-240 VAC, 50/60 Hz)

4. Warranty

a. Both the Laser and Chiller shall have a standard customer warranty

1026967410C Sticky Note Accepted set by 1026967410C

5. Infrared Development Laser Performance Requirements

a. The infrared development laser performance requirements are given in Table 1 below.

Table 1 Infrared Development Laser Requirements

Infrared Development Laser Requirements

Threshold Objective

Laser Type Quantum Cascade Laser

Operation Mode Continuous Wave or Pulsed

Center Wavelength Range 4.0-5.0 m 2.0-5.0 m

Spectral Resolution 0.200 m 0.100 m

Spatial Mode TEM00 (>85% fit to Gaussian)

Average Optical Power 1 W 3 W

CW Power Stability < 2% root-mean-squared for 1 hour

Rise/Fall Time (10-90%) < 100 ns

Beam Divergence

(full angle, 1/e2 intensity width) <5 mrad <3 mrad

Beam Diameter

(1/e2 intensity width) <5 mm2 <3 mm2

Beam Ellipticity <2.0 <0.5

Duty cycle Range ~0% to 99%

Pulse Repetition Frequency Internal trigger: 100 Hz to 100 kHz

External trigger: CW to 1 MHz Minimum Pulse Width 500 ns

Pulse-pulse stability 2.5% (peak to peak)

Operating Range (Case Temp) 15 - 55 °C

Polarization (relative to mounting surface) Linear Vertical

Polarization Stability < 2% deviation in 1 hour

Control Interface Controller included with system stand-alone operation or computer interface via USB 2.0 or

Ethernet 10/100

Cooling Passive air, Forced air or closed-loop water chiller

6. Thermoelectric Chiller Requirement

a. The vendor shall provide a thermoelectric chiller for closed loop liquid cooling.

b. Thermoelectric chiller requirements are given in Table 2 below.

Table 2 Thermoelectric Chiller Requirements

Thermoelectric Chiller Requirements

Threshold Objective

Type Solid State

Operating Range 0°C to 65°C

Ambient Temperature 10°C to 40°C non-condensing

Temperature control precision ± 0.05°C

Cooling capacity range 230 to 460 watts at 20°C

Noise (at 1 meter) 50 or less dBA at 50% load

63 or less dBA at 100% load

Pump Flow Rate

> 2 lpm @ 14 psig (adjustable for pressure sensitive applications)

Tank Volume 1 liter with level sensor

Wetted Materials Aluminum or Stainless Steel cold plate with compatible materials

Size (L x W x H) 20” x 15” x 15” 13” x 11” x 11”

Weight (empty) 35 lbs 25 lbs

Communications Keypad, RS232 or Optional Ethernet

HANK D. JACKSON II

Physicist

782 TS/RNWG