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VCSEL polarization control for chip-scale atomic clocks. (open access)

VCSEL polarization control for chip-scale atomic clocks.

Sandia National Laboratories and Mytek, LLC have collaborated to develop a monolithically-integrated vertical-cavity surface-emitting laser (VCSEL) assembly with controllable polarization states suitable for use in chip-scale atomic clocks. During the course of this work, a robust technique to provide polarization control was modeled and demonstrated. The technique uses deeply-etched surface gratings oriented at several different rotational angles to provide VCSEL polarization stability. A rigorous coupled-wave analysis (RCWA) model was used to optimize the design for high polarization selectivity and fabrication tolerance. The new approach to VCSEL polarization control may be useful in a number of defense and commercial applications, including chip-scale atomic clocks and other low-power atomic sensors.
Date: January 1, 2007
Creator: Geib, Kent Martin; Peake, Gregory Merwin; Wendt, Joel Robert; Serkland, Darwin Keith & Keeler, Gordon Arthur
Object Type: Report
System: The UNT Digital Library

[Visitors and Map of Mexico]

Photograph of visitors at an exhibition titled From Revolution to Renaissance: Mexican Art from the Aaron Collection. The exhibition was hosted by the Mexic-Arte Museum in Austin, Texas. The visitors stand in front of an illustrated map of Mexico. Four individuals are young adult females, while the remaining two are middle aged.
Date: 2007
Creator: Mexic-Arte Museum (Austin, Tex.)
Object Type: Photograph
System: The Portal to Texas History
Walker County, Texas Cemeteries: Volume 3 (open access)

Walker County, Texas Cemeteries: Volume 3

List of markers in Walker County cemeteries in Huntsville, Texas, including the Oakwood, Adickes, Mayes, St. Stephen's Columbarium, Captain Joe Byrd, Wynne Farm, and Goree Farm. Each entry includes the name, birth and death dates, plot number, and any additional information known. Some historical and supplemental information is also included about the cemeteries and families. An index to names starts on page 159.
Date: 2007
Creator: Walker County Genealogical Society
Object Type: Book
System: The Portal to Texas History
Walla Walla River Basin Fish Screens Evaluations, 2006 Annual Report. (open access)

Walla Walla River Basin Fish Screens Evaluations, 2006 Annual Report.

Pacific Northwest National Laboratory evaluated Gardena Farms, Little Walla Walla, and Garden City/Lowden II Phase II fish screen facilities and provided underwater videography beneath a leaking rubber dam in the Walla Walla River basin in 2006. Evaluations of the fish screen facilities took place in early May 2006, when juvenile salmonids are generally outmigrating. At the Gardena Farms site, extended high river levels caused accumulations of debris and sediment in the forebay. This debris covered parts of the bottom drum seals, which could lead to early deterioration of the seals and drum screen. Approach velocities were excessive at the upstream corners of most of the drums, leading to 14% of the total approach velocities exceeding 0.4 feet per second (ft/s). Consequently, the approach velocities did not meet National Marine Fisheries Service (NMFS) design criteria guidelines for juvenile fish screens. The Little Walla Walla site was found to be in good condition, with all approach, sweep, and bypass velocities within NMFS criteria. Sediment buildup was minor and did not affect the effectiveness of the screens. At Garden City/Lowden II, 94% of approach velocities met NMFS criteria of 0.4 ft/s at any time. Sweep velocities increased toward the fish ladder. The air-burst …
Date: January 1, 2007
Creator: Chamness, Mickie; Abernethy, Scott & Tunnicliffe, Cherylyn
Object Type: Report
System: The UNT Digital Library

[Washington-on-the-Brazos State Historic Site: Reliving Texas' Independence]

Visit the historic site where the Texas Declaration of Independence was adopted in 1836. Explore 293 acres featuring Independence Hall, Barrington Living History Farm, and the Star of the Republic Museum. Experience life on a mid-19th-century farm with costumed interpreters at Barrington Living History Farm, where Dr. Anson Jones, the last President of the Republic of Texas, once lived. Discover the rich heritage of Texas at this fascinating state historic site.
Date: 2007
Creator: Mallory, Randy
Object Type: Photograph
System: The UNT Digital Library
Water Conservation Plans and Annual Reports (open access)

Water Conservation Plans and Annual Reports

Document describing water conservation plans and annual reports.
Date: [2007..]
Creator: Texas Water Development Board
Object Type: Pamphlet
System: The Portal to Texas History
Water IQ Public Awareness for Water Conservation (open access)

Water IQ Public Awareness for Water Conservation

Document describing the Water IQ water conservation program.
Date: 2007
Creator: Texas Water Development Board
Object Type: Pamphlet
System: The Portal to Texas History

[Welcome to Rocking R--Rahm Ranch: A Symbol of Heritage and Legacy]

Step into the enchanting world of Rocking R--Rahm Ranch, where a captivating gateway stands as a testament to the ranch's rich history and cherished traditions. Designed by Mrs. Rahm in collaboration with skilled maker Jack McCartney, this impressive 48-feet long gateway is a work of art, showcasing names and brands that have been associated with the ranch since its inception in 1901. Marvel at the intricate metal scenes that beautifully depict the ranch's diverse wildlife, a tribute to the harmonious coexistence of domesticated and wild animals on this sprawling hay ranch. Nestled near Ben Wheeler in Van Zandt County, the ranch's gateway beckons visitors to explore its timeless charm and experience the spirit of legacy that lives on in every corner of Rocking R--Rahm Ranch.
Date: 2007~
Creator: Mallory, Randy
Object Type: Photograph
System: The UNT Digital Library
Whiteness: A Review of Literature (open access)

Whiteness: A Review of Literature

Paper discusses a review of literature on whiteness, and considers common themes in that literature as well as gaps in discourse.
Date: 2007
Creator: Schuelke, Elizabeth
Object Type: Article
System: The UNT Digital Library

The Wildcat, Yearbook of Archer City Schools, 2007

Yearbook for Archer City Elementary, Junior High, and High School in Archer City, Texas includes photos of and information about the school, student body, teachers, clubs, and events. Index starts on page 140.
Date: 2007
Creator: Archer City High School
Object Type: Yearbook
System: The Portal to Texas History
Wildlife Research Highlights, Volume 8, 2007 (open access)

Wildlife Research Highlights, Volume 8, 2007

Wildlife research projects reports from the Texas Parks and Wildlife Department for fiscal year 2007.
Date: 2007
Creator: Texas. Parks and Wildlife Department.
Object Type: Report
System: The Portal to Texas History

[Woman decorating yellow shirt from Clothesline Project]

Photograph of a woman decorating a yellow shirt from the Clothesline Project at the University of North Texas, held by UNT Special Collections. The image shows a young African American woman in a green sweatshirt standing at a table with a yellow shirt laid in front of her. She holds a shirt paint bottle over it. The Clothesline Project was started in Cape Cod, MA, in 1990 to address the issue of violence against women and serve as a vehicle for women affected by violence to express their emotions. The Clothesline Project takes place multiple times during October, which is Domestic Violence Awareness Month. Students and community members may create a shirt which allows each survivor to tell their own story, allowing those who are still suffering in silence to understand they are not alone.
Date: January 1, 2007
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Woman holding microphone at Cafe Diversity]

A photograph of a young woman speaking and holding a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair and other people are sitting in chairs on either side of her. She has a stack of papers and a pen in her lap as well.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman in circle at Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair arranged in a circle with other people on both sides. They all have paper and pens in their laps too.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman making Act With Love shirt from Clothesline Project]

Photograph of a woman making an Act With Love shirt from the Clothesline Project at the University of North Texas, held by UNT Special Collections. The image shows a young woman sitting at a table with a purple cover over it, holding a pint bottle in hand. In front of her is a white shirt laid out, with paint gel bottles on the side. Painted on the shirt are the words "Act With Love" at the top in red. In black at the bottom are the words "Put a stop to domestic violence." The Clothesline Project was started in Cape Cod, MA, in 1990 to address the issue of violence against women and serve as a vehicle for women affected by violence to express their emotions. The Clothesline Project takes place multiple times during October, which is Domestic Violence Awareness Month. Students and community members may create a shirt which allows each survivor to tell their own story, allowing those who are still suffering in silence to understand they are not alone.
Date: January 1, 2007
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Woman making Je Suis Libre shirt from Clothesline Project]

Photograph of a a woman making a Je Suis Libre shirt from the Clothesline Project at the University of North Texas, held by UNT Special Collections. The image shows a woman with short hair in a grey shirt. In front of her is a white t shirt with paint gel bottle around it. On the t shirt are angel wings in grey paint and in the middle the words "Je Suis Libre" in blue. The Clothesline Project was started in Cape Cod, MA, in 1990 to address the issue of violence against women and serve as a vehicle for women affected by violence to express their emotions. The Clothesline Project takes place multiple times during October, which is Domestic Violence Awareness Month. Students and community members may create a shirt which allows each survivor to tell their own story, allowing those who are still suffering in silence to understand they are not alone.
Date: January 1, 2007
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Woman making shirt from Clothesline Project]

Photograph of a a woman making a shirt from the Clothesline Project at the University of North Texas, held by UNT Special Collections. The image shows t shirts stacked on a table. From right to left they are: pale pink, red, and green. The last two a young woman sitting at a red table with a green t shirt laid out on it. She puts lettering on it with a bottle of shirt paint. The Clothesline Project was started in Cape Cod, MA, in 1990 to address the issue of violence against women and serve as a vehicle for women affected by violence to express their emotions. The Clothesline Project takes place multiple times during October, which is Domestic Violence Awareness Month. Students and community members may create a shirt which allows each survivor to tell their own story, allowing those who are still suffering in silence to understand they are not alone.
Date: January 1, 2007
Creator: unknown
Object Type: Photograph
System: The UNT Digital Library

[Woman relaxing in circle at Cafe Diversity]

A photograph of a woman holding a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair and has notebooks and a pen in her lap and a bag on the ground in front of her.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman sitting cross-legged at Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair arranged in a circle with other people has her legs crossed under her.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman speaking at Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suite in the UNT Student Union. She is seated in a chair and two other people are beside her. They hace papers and binders in their laps as well.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman speaking during Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suite in the UNT Student Union. She is seated in a chair and two other people are sitting in chairs on either side. One of them has a notebook with writing in it on her lap.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman speaking from group at Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair arranged in a circle with other people.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman speaking in circle at Cafe Diversity]

A photograph of a woman speaking with a microphone in one of the conference suites in the UNT Student Union. She is seated in a chair and has notebooks and a pen in her lap and a bag on the ground beside her.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library

[Woman speaking to group at Cafe Diversity]

A photograph of groups of people seated in chairs that are arranged in a circle in one of the conference suite in the UNT Student Union. Some have folders and spirals with paper in their laps. A woman is speaking in the front group.
Date: January 1, 2007
Creator: University of North Texas. Multicultural Center.
Object Type: Photograph
System: The UNT Digital Library