Tab 04 SOW.pdf

High Bandwidth Prototype Avalanche PhotoDiode (APD) Modules

Statement of Work (SOW)

Table of Contents

1 DELIVERABLES

1.1 MEETINGS

1.1.1 Kickoff Meeting

1.1.2 Monthly Status Meeting

1.1.3 Pre-Ship Meeting

1.2 MODULE SPECIFICATIONS

1.3 CHARACTERIZATION REPORTS

1.4 APD PROTOTYPE 3 (LLAM CD3830 PRO-3 HIGH BANDWIDTH MODULE)

1.5 APD PROTOTYPE 4 (LLAM CD3830 PRO-4 HIGH BANDWIDTH MODULE)

1.6 CONTRACT DATA REQUIREMENTS LIST (CDRL)

2 PERIOD OF PERFORMANCE

Version 1.1 July,11 2025

1 Deliverables The Contractor shall support the meetings and provide deliverable products as specified below.

1.1 Meetings

1.1.1 Kickoff Meeting

The Contractor shall support a 1-hour virtual kickoff meeting within 2 weeks of contract award.

This virtual meeting will allow for discussion between contractor and the National Aeronautics and Space Administration (NASA) regarding high-level review of the engineering, production, and testing tasks the contractor will be undertaking to fulfill the contract deliverables.

1.1.2 Monthly Status Meeting

In addition to kickoff (section 1.1.1) and pre-ship (section 1.1.3) meetings, the Contractor shall support a monthly 1-hour virtual status meeting for the purpose of updating NASA on progress towards delivery of the prototype hardware. The first meeting shall occur 4 weeks after contract award. If mutually agreed by the contractor and the government, updates may be provided via email instead of virtual conferencing.

1.1.3 Pre-Ship Meeting

The Contractor shall support a 2-hour virtual pre-ship meeting during which the contractor’s team shall provide briefing of their APD detector module characterization results for all modules and provide NASA with an opportunity to review the results with the contractor prior to shipment of hardware. Module specifications and characterization reports shall be made available to NASA 1 week prior to the Pre-Ship meeting.

1.2 Module Specifications

The Contractor shall furnish a specification sheet for the prototype APD module. The following items shall be included:

1. Materials List describing the APD die part number, TEC part number, thermistor part number, package description, glass properties, and purge gas composition/concentration.

2. Electro-Optic Specifications including the minimum and maximum values for the following (unless otherwise noted, specified with APD die controlled to +25 ℃ and -20

a. Breakdown Voltage

b. Operating Voltage

c. Dark Current

d. Spectral Noise

e. Noise Equivalent Power

f. Bandwidth

g. Gain Peaking

h. Output DC Offset

i. Positive Supply Current

j. Negative Supply Current

k. Nominal Thermistor Resistance at +25 ℃

l. TEC Resistance at +25 ℃

3. Absolute Maximum Ratings

a. Storage Temperature and Humidity Range

b. Case Operating Temperature Range

c. APD Die Operating temperature Range

d. Unbiased APD Damage Threshold

e. Biased APD Damage Threshold

f. Maximum Leak Rate

4. Package Outline Drawing

a. Critical dimensions locating APD die position, external features, and pins

b. Electrical Pinout

c. Window flatness

1.3 Characterization Reports

The Contractor shall furnish a characterization report for each detector module. Critically, the thermistor calibrations shall be performed before commencing all other characterization such that consistent and traceable thermal conditions are maintained throughout performance testing of each module.

The following tests are expected to be performed at the APD die level before assembly into the module. The contractor may exercise discretion regarding the correct level of assembly to perform testing given limitations of test setup and fundamental performance constraints of the device under test. At a minimum these tests shall be performed at +25 ℃). Additional testing at – 20 ℃ is optional).

IVGN (current, voltage, gain, noise), step size at discretion of contractor C-V (capacitance versus voltage) scan of operational voltage to within 5 V below breakdown, step size at the discretion of contractor Spectral Response (measured from ~1000 nm to ~1100 nm) at gain of ~200 A/A

This report shall include the manufactures’ measured performance parameters including but not limited to (unless otherwise noted, APD die controlled to +25 and -20 ℃):

Full responsivity surface scan at 635 nm (only measured at +25 ℃) Line responsivity scan at 1064 nm (only measured at +25 ℃) Breakdown Voltage Operating Voltage Module Responsivity @ 1064 nm ±5 nm Dark Current versus Bias Voltage Output DC offset Noise Equivalent Power Bandwidth (only measured at +25 ℃)

All unique testing configurations shall be specified in a block diagram, tables, or text within the report with sufficient detail for NASA to re-create the test or compare alternate test methods in a fair manner. For example, tests involving illumination should include the following information:

the source type, wavelength range, beam diameter, and incident optical power level within the active area of the APD are desired to be captured. The electrical interface to test equipment including impedance of terminations or ancillary signal conditioning equipment is to be included along with key settings of test equipment.

1.4 APD Prototype3 (LLAM CD3830 PRO-3 High Bandwidth Module)

The contractor shall deliver Qty. 2 LLAM CD3830 PRO-3 detector modules to NASA that satisfies the requirements provided in Table 1.

Table 1: LLAM CD3830 PRO-3 Requirements

Requirement Description Value Condition R001

Thermal Control Mechanism

Single stage thermoelectric cooler

R002 Operational Temperature for APD Die

≤ -20 °C Capable of -20 °C APD die operation with case at 30 °C

R003 APD Gain at Operational Temperature

≥200 A/A For bias voltage ≥380 V, APD die at -20 °C*

R004a Guard Band Connected to Ground internal to package

Internal to package

R005 TIA Gain 400 kΩ

R006 Module Bandwidth ≥12 MHz 3 dB down from DC response of module (APD with TIA)

R007 Input Referred Noise

<0.3 pA/√Hz

R008 k-factor 0.008 (typical)

R009 Window AR Coating

<0.5% reflectivity average, coating on both sides of window if possible

At 633 nm and 1064 nm

R010 Package TO-66 commercial package with flange

R011 Electrical Coupling of TIA output

DC coupled Able to drive ≥1 kΩ ohm load

*May suggest a breakdown voltage of 525 V at +25 °C

1.5 APD Prototype4 (LLAM CD3830 PRO-4 High Bandwidth Module)

The contractor shall deliver Qty. 1 LLAM CD3830 PRO-4 detector module to NASA that satisfies the requirements provided in Table 1 with R005a replaced by R005b from Table 2 . In short, only the guard band connection requirement changes from PRO-3 to PRO-4.

Table 2: LLAM CD3830 PRO-4 Unique Requirement

Requirement Description Value Condition

R004b Guard Band Connected to extra pin in package for external termination

(If this is problematic, leaving floating inside package is acceptable)

1.6 Contract Data Requirements List (CDRL)

The Contracting Officer's or COR’s electronic approval will constitute acceptance of all deliverables. CDRL 002 shall be reviewed and approved by NASA prior to shipment of CDRL

004. Likewise, CDRL 003 shall be reviewed and approved by NASA prior to shipment of CDRL

005. NASA will provide approval or request additional information no later than two business days after the pre-ship review meeting.

ID Deliverable Comments Delivery Date

CDRL 001

Draft Prototype3 and Prototype4 Module Specification

1 month after contract award

CDRL 002

Prototype3 Final Module Specification and Characterization Reports (Section 1.3)

Delivery of Qty. 2 LLAM CD3830 PRO-3 Characterization Results to

NASA

Before conclusion of period of performance

CDRL 003

Prototype4 Final Module Specification and Characterization Report (Section 1.3)

Delivery of Qty. 1 LLAM CD3830 PRO-4 Characterization Results to

NASA

Before conclusion of period of performance

CDRL 004

Qty. 2 of Prototype3 (Section 1.4) Delivery of Qty. 2 LLAM CD3830

PRO-3 Units to NASA Before conclusion of period of performance

CDRL 005

Qty. 1 of Prototype4 (Section 1.4, 1.5)

Delivery of Qty. 1 LLAM CD3830 PRO-4 Units to NASA

Before conclusion of period of performance

2 Period of Performance Contract Award (approximately 30 September 2025) plus 30 weeks.