Dr. Dicky Daniel Profile

Dr. Dicky Daniel

at Aerospace Corp

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 12 March 2024 Paper

Time-resolved analysis of degradation in high-power broad-area lasers with quantum well and quantum dot active regions

Yongkun Sin, Cassidy Feltenberger, Dicky Daniel, Matthew Voegtle, In-Tae Bae

Proceedings Volume 12867, 128670I (2024) https://doi.org/10.1117/12.3000500

KEYWORDS: Electroluminescence, Quantum wells, Accelerated life testing, Quantum dots, High power lasers

Read Abstract +

High-power broad-area lasers are critical components for space satellite communications systems. Broad-area lasers with InGaAs-AlGaAs strained Quantum Well (QW) active regions are currently used in space satellite systems. These QW lasers have shown excellent power and efficiency characteristics, but these lasers are still susceptible to COD (catastrophic optical damage) leading to catastrophic and sudden degradation. Thus, their long-term reliability in space environments is a major concern. Furthermore, our group has shown that these lasers predominantly degrade by a new failure mode due to Catastrophic Optical Bulk Damage (COBD). The 3-D confinement of carriers in InAs-GaAs Quantum Dot (QD) active region has a potential to suppress nonradiative recombination of carriers at growth or radiation induced defect sites. This feature makes the QD lasers attractive for space applications. For the present study, we employed time-resolved analysis techniques including time-resolved electroluminescence (TR-EL) and time-resolved photoluminescence (TR-PL) techniques to investigate degradation in high-power broad-area lasers. We studied broad-area lasers with two different types of active regions – strained InGaAs-AlGaAs single QW layer and ten stacks of InAs-GaAs QD layers. TR-EL techniques were employed for time-resolved analysis of degradation processes in QW and QD lasers to study the sequence of critical events including the formation and propagation of dark line defects in ⪅110⪆, ⪅11̅0⪆, and ⪅100⪆ directions during accelerated life-tests. TR-PL techniques were employed to measure carrier lifetimes in QW laser wafer. Lastly, we report our understanding on degradation mechanisms in broad-area lasers with QW and QD active regions.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years